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What is the purpose of treating serum containing cold autoantibodies with dithiothreitol (DTT) or 2-mercaptoethanol (2-ME)?

Reverse grouping was performed on an AB person. The technologist observed a very weak agglutination macroscopically. The cells appeared as “stacked coins” under a microscope. Which reagent should be added to the tube and recentrifuged in an attempt to resolve the discrepancy?

If not labeled “gamma heavy chain specific,” monospecific anti-IgG may contain antibodies to:

Secretor studies were performed on a person who expressed weak reactions in forward grouping. Only B and H substance were present in saliva. What is this person’s ABO group?

A patient came in for a routine type and screen prior to surgery. The antibody screen was negative at 37°C and AHG phase. Check cells did not produce agglutination often. What is a possible explanation for this result?

Which of the following red blood cell morphologies may be present on the peripheral blood smear as a result of loss of RBC membrane?

Which of the following is representative of the “central dogma” of molecular biology?

What is a vector?

When 1000 donors were tested, 75% were positive for C and 25% were negative for C; the gene frequency of C is:

Which of the following best describes the principle of polymerase chain reaction (PCR)?