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LABORATORY RESULTS: WBC = normal with a normal differential and platelet count Hct = 29%; MCV = normal, MCHC = slightly decreased; RDW = markedly increased; reticulocyte count < 2% Smear with mixed microcytic/hypochromic and macrocytic/normochromic red blood cells; WBC and platelets appear normal PT/PTT, liver function tests, electrolytes, and […]

Q1. In humans there are three alleles at ABO locus causing blood sorts A, B, AB, and O. How various genotypic and phenotypic combinations are possible in the offspring of a brown-eyed, red-haired, taster man with AB blood group (Bb rr Tt AB) married to the blue-eyed, non-red haired, taster […]

Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine? A. Malaria is caused by several species of Plasmodium. B. Man does not develop immunity to malaria during natural infection. […]

The bacterium Helicobactor pylori naturally grows in human and animal stomachs at pH about 2. It will grow also at pH 2 and pH 7 in culture media. It’s genome sequence has been determined and annotated. You are assigned to determine which genes, if any, are highly expressed and which […]