What is the effect of placental hormones, especially progesterone, on the immune system of a pregnant woman?
Answer: decreased response to fetus
Biology & Microbiology
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Which of the following is/are MHC class I genes?
A) HLA-A B) HLA-B C) HLA-C D) HLA-A, HLA-B, and HLA-C
Biology & Microbiology
The observation that atmospheric CO2 levels were typically low during glacial periods in Earth's history is an example of _________________
A. causation B. correlation C. communication
Biology & Microbiology
Many childhood diseases caused by viral infections of the upper respiratory tract can usually be diagnosed by
A. inspection of the rash. B. the type of cough. C. the type of fever. D. the incubation period.
Biology & Microbiology
What type of cancer causes the most deaths in males?
A. colon and rectum B. pancreas C. lung and bronchus D. esophagus E. prostate
Biology & Microbiology