RH, Lewis, MNS BLOOD GROUP SYSTEMS

Identify the problem category for forward and reverse grouping miscellaneous causes.

Identify three general antibody-related causes of Group IV discrepancies.

Fill in the blank: Tactivation infection by ____________ is a cause associated with cold reactive autoantibodies.

Identify the acronyms associated with inactivation under cold reactive autoantibodies in the notes.

True or False: Mutations are considered inherited forms of Group IV discrepancies.

Identify two patient situations that can cause the presence of more than one ABO group of RBCs.

Identify the condition where patient RBCs are agglutinated by most adult human sera but not by autologous serum or newborn sera.

Identify the patient's probable blood group if forward grouping shows Anti-A 2+ and Anti-B 4+, while reverse grouping shows A cells 4+ and B cells 2+.

True or False: Cold agglutinins never react above 30°C.

Identify the initial resolution step for patient RBCs in forward typing when cold autoantibodies cause a discrepancy.

Fill in the blank: If washing at 37°C fails to resolve cold autoantibodies in forward typing, treat the patient's RBCs with ____________ dithiothreitol.

Identify the full chemical name for the abbreviation DTT.

Identify the temperature to which reagent RBCs and serum must be warmed, mixed, tested, and read during reverse typing resolution for cold autoantibodies.

Identify the procedure performed to remove cold autoantibodies if reverse typing remains unresolved after warming to 37°C.

Identify the patient's probable blood group if forward grouping shows Anti-A 4+ and Anti-B 4+, while reverse grouping shows A cells 1+ and B cells 0.

Identify the specific circulating antibody in the serum causing the 1+ reaction with A cells in the unexpected ABO isoagglutinins example.

Fill in the blank: To resolve unexpected ABO isoagglutinins, determine the specificity of the antibody by testing cells with anti-A1 ____________ and serum with A1, A2, and O cells.

Identify the patient's probable blood group if forward grouping shows Anti-A 4+ and Anti-B 4+, while reverse grouping shows A cells 1+ and B cells 1+.

Identify the resolution steps for unexpected non-ABO alloantibodies where both A and B cells show 1+ reactivity.

Identify the rare Group IV discrepancy where the anti-B antigen will be agglutinated due to a reagent component antibody.

Identify the rare phenotype where an offspring inherits both A and B genes from one parent on the same side.

Fill in the blank: In genetics, genes located on the same side are termed ____________, while those on opposite sides are termed trans.

Identify the scientists who proposed the two-gene model (RHD and RHCE) for the Rh blood group system.

Identify the chromosome where the RHD and RHCE genes are located.

Identify the specific Rh antigen whose expression is controlled by the RHD gene.

Identify the four Rh polypeptide combinations controlled by the RHCE gene.

True or False: Codominance is observed in the expression of RHCE gene products.

Identify the chromosome where the RHAG gene is located.

Fill in the blank: The RHAG gene codes for a ____________ that must be present to express Rh antigen, though by itself it cannot express any Rh antigen.

True or False: Mutations in the RHAG gene can cause significantly altered RhD and RhCE proteins.

Identify the Rh nomenclature system that involves three separate closely linked genes (D, C, E) inherited as a group.

Identify the corresponding RBC surface antigens expressed by the Fisher-Race genes D, C/c, and E/e.

Fill in the blank: In the Fisher-Race system, the absence of the D antigen is designated as ____________.

True or False: The 'd' antigen is a placeholder notation and not an actual physical antigen.

Identify the Rh nomenclature system based on the theory that a single locus on a gene carries the entire Rh system.

Fill in the blank: According to Wiener's terminology, each Rh gene produces an ____________ containing a series of three blood factors.

True or False: In Wiener nomenclature, each blood factor is an antigen recognized by an antibody.

Identify what the agglutinogen represents in terms of haplotypes in the Wiener system.

Convert the Fisher-Race haplotype DCe into Wiener shorthand terminology.

Convert the Fisher-Race haplotype DcE into Wiener shorthand terminology.

Convert the Fisher-Race haplotype Dce into Wiener shorthand terminology.

Convert the Fisher-Race haplotype DCE into Wiener shorthand terminology.

Convert the Fisher-Race haplotype dce into Wiener shorthand terminology.

Convert the Fisher-Race haplotype dCe into Wiener shorthand terminology.

Convert the Fisher-Race haplotype dcE into Wiener shorthand terminology.

Convert the Fisher-Race haplotype dCE into Wiener shorthand terminology.

Fill in the blank: In Wiener terminology, a single prime (') or the number 1 corresponds to the presence of the ____________ antigen.

Fill in the blank: In Wiener terminology, a double prime (") or the number 2 corresponds to the presence of the ____________ antigen.

Fill in the blank: In Wiener terminology, the letter 'o' or number 0 corresponds to the presence of ____________ antigens.

Fill in the blank: In Wiener terminology, the letter 'z' or 'y' corresponds to the presence of ____________ antigens.

Identify how genotype and phenotype are designated in Wiener shorthand notation using superscripts and subscripts.

Identify the Wiener blood factor designation for the D antigen.

True or False: In Wiener terminology, capital letters C and E are designated using 'rh' where the 'r' precedes the 'h'.

True or False: In Wiener terminology, lowercase letters c and e are designated using 'hr' where the 'h' precedes the 'r'.

Identify the prime notation used for C/c antigens in Wiener terminology.

Identify the prime notation used for E/e antigens in Wiener terminology.

Identify the Wiener designation for the 'd' antigen.

Identify the most common Rh genotype/haplotype in Black populations.

Identify the most common Rh genotype/haplotype in Asians and Whites.

List the Rh haplotypes in decreasing order of frequency among African-Americans.

List the Rh haplotypes in decreasing order of frequency among Caucasians.

Identify the Fisher-Race genotype corresponding to the Wiener notation r'r'.

Identify the Fisher-Race genotype corresponding to the Wiener notation r''r.

Identify the Fisher-Race genotype corresponding to the Wiener notation r''r''.

Identify the Fisher-Race genotype corresponding to the Wiener notation r'r'' or ryr.

Identify the Rh nomenclature system that uses alpha-numeric terminology and has no genetic basis.

In Rosenfield nomenclature, identify what a minus sign (-) preceding a number designates.

Identify the Rosenfield numbers assigned to the five principal Rh antigens: D, C, E, c, and e.

Convert the Fisher-Race phenotype D+, C+, E+, c+, e+ into Rosenfield notation.

Fill in the blank: In Rosenfield notation, if an antigen has not been typed, its number will ____________ in the sequence.

Identify the nomenclature system that adopts a 6-digit number for each authenticated antigen.

Identify the acronym for the International Society of Blood Transfusion.

In ISBT nomenclature, identify what the first three numbers and the last three numbers represent.

Identify the 3-digit system number assigned to the Rh Blood Group by the ISBT.

Identify the full 6-digit ISBT number for the D antigen.

Identify the full 6-digit ISBT number for the C antigen.

Identify the full 6-digit ISBT number for the E antigen.

Identify the full 6-digit ISBT number for the c antigen.

Identify the full 6-digit ISBT number for the e antigen.

Identify the "Big 4" most common Rh genotypes using Wiener shorthand.

True or False: Rh antigens are non-glycosylated polypeptides that contain no carbohydrates.

True or False: Rh antigens are soluble and widely expressed on body tissues.

True or False: Rh antigens are well developed at birth and can easily cause Hemolytic Disease of the Newborn.

Identify the most immunogenic RBC antigen after the A and B antigens.

List the five principal Rh antigens in decreasing order of their immunogenicity.

Identify the ethnic group in which the Weak D phenotype is most common.

Identify three methods used to detect or confirm Weak D expression.

Identify the type of Weak D cause that is due to a positional effect where the C allele is in trans position to the RHD allele.

True or False: Individuals with positional Weak D (C in trans) have normal Rh antigens and can receive D+ RBCs safely.

Identify the cause of Weak D where the inherited RHD gene codes for a lower number of fully expressed D antigens.

True or False: Genetic weak D individuals frequently produce anti-D alloantibodies because the alterations are inside the RBC.

Identify the term used when one or more epitopes within the D protein are missing or altered.

True or False: Partial D individuals can form alloantibodies against missing epitopes, which can cause HDN.

Identify how a Partial D individual is classified when acting as a blood donor versus when acting as a recipient.

Identify the rare Rh phenotype characterized by the complete absence of C, c, E, and e antigens, but an increased number of D antigens.

Identify the rare Rh phenotype where there is absolutely no Rh antigen expression on the RBCs.

List the clinical and hematologic characteristics associated with the Rh Null syndrome.

Identify the type of Rh Null caused by a mutation in the RHAG gene despite having normal RHD and RHCE genes.

Identify the type of Rh Null caused by a deleted RHD gene or mutation in the RHCE gene while having a normal RHAG gene.

Identify the condition characterized by partial suppression of the Rh gene resulting in weakened Rh antigen expression due to an RHAG mutation.

Identify the compound antigen expressed only when 'c' and 'e' are in the cis position on the same chromosome.

Identify the antigen caused by a single amino acid change on the RhCe protein.

Identify the compound antigen expressed when both 'C' and 'e' are present.

Identify the antigen that is present on most D+ and C+ RBCs but absent on D-C- cells.

Identify the descriptive term used for exceptionally strong D antigen expression due to the total absence of Cc/Ee expression.

True or False: Rh antibodies are immune antibodies that are not naturally occurring and require prior sensitization through pregnancy or transfusion.

Identify the immunoglobulin class of Rh antibodies and their optimal reaction temperature.

True or False: Rh antibodies can cross the placenta and cause Hemolytic Disease of the Newborn.

Identify the primary site of destruction (hemolysis) for hemolytic transfusion reactions caused by Rh incompatibilities.

Identify the minimum volume of Rh+ RBCs capable of stimulating antibody production in an Rh negative individual.

Identify the specific antibody activity that warm autoantibodies often appear to mimic.

Identify the chromosome where the LW blood group system gene (ICAM4) is located.

Identify the membrane protein on which LW antigens reside.

Identify the chemical treatment used to differentiate between the D antigen and the LW antigen by destroying LW while leaving D intact.

True or False: The D antigen is resistant to and not denatured by dithiothreitol treatment.

Identify the animals used to produce antibodies when exposed to Rhesus monkey RBCs in early LW system discovery.

Identify the required temperature range inside the Rh viewbox for the slide method of Rh typing.

Fill in the blank: Agglutination in the slide method of Rh typing must be read within ____________ minutes to avoid false positive results from drying.

Identify the optimal concentration of the red cell suspension prepared for the tube method of Rh typing.

Identify the reagent added to link non-agglutinating antibodies during the late phases of the tube method or Weak D testing.

List the three quality control purposes of adding Check Cells/Control cells to a negative AHG test.

Fill in the blank: If check cells do not show agglutination (negative result), the entire test must be ____________.

True or False: Unbound antibodies left in the tube due to improper washing will neutralize the AHG reagent.

Identify three common reagents used in routine Rh typing procedures.

True or False: Reverse typing is routinely performed for the Rh blood group system.

Identify the specific serological test format used to perform Weak D typing.

Identify the full name of the acronym IAT.

Identify the reagent added after washing the patient's RBCs in the Weak D typing procedure.

Identify the composition of Check Cells commonly used in blood banking.

Identify the number of times the tube must be washed with isotonic saline during Weak D typing.

Identify the donor and recipient Rh classifications for an individual confirmed to be Weak D positive.

Identify the compatible red blood cell types for an AB negative patient in order of preference.

True or False: For plasma/FFP transfusions, an O positive patient can safely receive plasma from any ABO blood group.

True or False: Any ABO blood type component may be used for platelet and cryoprecipitate transfusions if the patient's identical type is unavailable.

Fill in the blank: Rh compatibility considerations strictly apply only to the transfusion of red blood cells and ____________.

True or False: An Rh positive patient can safely receive either Rh positive or Rh negative red blood cell components.

Identify the ISBT system number for the Lewis blood group system.

Identify the gene and chromosome location for the Lewis blood group system.

Identify the two primary antigens of the Lewis system.

Fill in the blank: Lewis antigens are synthesized in tissues as ____________ and found in secretions before being adsorbed onto the RBC membrane as glycolipids.

Identify the immunoglobulin class and thermal property of Lewis antibodies.

Identify the characteristic Lewis phenotype of newborns at birth.

Identify the specific Lewis antigen that serves as a receptor for Helicobacter pylori.

Identify the ISBT system number for the MNS blood group system.

Identify the three genes and the chromosome location associated with the MNS system.

Identify the specific glycophorin structures that carry the M, N antigens and the S, s, U antigens respectively.

Identify the MNS system antibodies that are typically cold-reacting IgM or IgG molecules.

Identify the MNS system antibodies that are warm-reacting IgG molecules capable of crossing the placenta and causing HDFN or HTRs.

Identify the specific MNS antibody most commonly found in Black individuals who lack both S and s antigens.

Identify the microbial pathogens that use Glycophorin A and Glycophorin B as receptors on the RBC membrane.

Fill in the blank: The phenomenon where an antibody reacts more strongly with homozygous cells than heterozygous cells, observed in the MNS system, is called the ____________.

Identify the ISBT system number and chromosome location for the P1PK blood group system.

Identify the primary antigens belonging to the P1PK system.

Identify the antigen that serves as a receptor for Shiga toxin leading to Hemolytic Uremic Syndrome (HUS).

Identify the ISBT system number and gene location for the Globoside blood group system.

Identify the primary antigen of the Globoside system.

Identify the virus that utilizes the P globoside antigen as its receptor for entry.

Identify the clinical condition and the autoantibody involved that is associated with the Globoside system.