Which of the following distinguishes the recessive LuLu gene from the dominant In(Lu) gene?

What may be added to samples from patients taking heparin to induce clotting?

Why was U antigen included in the MNSs blood group system?

A patient was phenotyped for the presence of Lewis antigens (Lea and Leb). A 3+ reaction was observed when patient cells were incubated with anti-Lea. No reaction was observed with anti-Leb. Based on these results, the patient’s phenotype is _____________ and the patient is a ____________ of ABH substances.

Within what time after collection of whole blood must RBCs be separated from whole blood in order for platelet and plasma components to be prepared?

A hydrocarbon molecule is considered to be saturated if the molecule contains

A plasma inhibition study was performed on a patient whose serum sample reacted +/– on all panel cells at AHG. Three sets of A, B, C tubes were set up according to the following scheme:Tube A had 2 drops of patient serum and 1 drop of Ch(a+) Rg(a-) plasma.Tube B had 2 drops of patient serum and 1 drop of Ch(a– Rg(a+) plasma.Tube C had 2 drops of patient serum and 1 drop of Ch(a+) Rg(a+) plasma.Screening cells were added in triplicate and incubated for 60 minutes at 37°C. The antiglobulin test was performed. All three A tubes reacted at 2+, and the B and C tubes were negative. What antibody is indicated?

Which tests must be performed on the donor sample?

What anticoagulant is used to eliminate false-negative reactivity caused by cold autoantibodies and rouleaux?

Choose the correct Haworth structure for the alpha anomer of the following monosaccharide: haworth_trans.jpg