Exam 8: Blood Group Terminology and the Other Blood Groups

A woman undergoing a hysterectomy requires two units of blood. The antibody screen was negative. One unit was incompatible in the Coombs phase (2+), the other unit was compatible. Give a reason why this antibody was not detected in the antibody screen.

Red blood cells were treated with ficin to help rule in anti-M from a panel study. Cells not treated reacted at 2+ at immediate spin and 1+ at 37°C. There was no reactivity in the Coombs phase. Ficin-treated cells demonstrated a _______________reaction with patient serum containing anti-M.

Most blood group alleles are:

An antibody that reacts in the IAT phase of the antiglobulin test and whose antigen expression is depressed by the In(Lu) gene is:

Which population has the greatest frequency of the Fy(a-b-) phenotype?

The following is true regarding anti-Do^a and anti-Do^b.

The Ii antigens are found on the membranes of which structures?

The Duffy antigens have mobility characteristics similar to what other antigenic structure?

Which of the following blood groups is inherited from the parents but absent at birth?

Persons who inherit the Se and Le genes will have_______________ A or B glycolipids in plasma than persons who are Se le.

LW has a phenotypic relationship with the_____ antigen.

What is the etiology of chronic granulomatous disease (CGD)?

All of the following are characteristics of the En^a antigen except:

I and i antigens are found in plasma, serum, and what other possible source?

_____ is an antigen in the high-prevalence series (901) that is found in saliva and urine. The corresponding antibody typically reacts at the AHG phase and produces a characteristic refractile, mixed-field reaction.

The homozygous phenotype Fy(a+b-) has _______________antigenic Fy sites than heterozygous cells, Fy(a+b+).

P1 antigens:

What does the type 1 chain refer to?

Hemolysis associated with ficin-treated cells is more common with which red blood cells?

How can pathologic anti-I be differentiated from benign anti-I?