A. none of the answers are correct
28. Which of the following statements are accurate?
A. none of the answers are correct
B. An effective humoral immune response typically requires both T cell and B cell activation.
C. T cells activation does not usually require antigen presentation by an antigen presenting cell.
D. Viruses can avoid activating the adaptive immune system if they do not change their surface antigens once they have been recognized by T and B cells.
E. People who were affected with the smallpox virus before cowpox virus were naturally immune to the smallpox virus because the viruses shared some common antigens and the memory cells that recognized cowpox antigens responded to smallpox antigens as well.
F. Helper T cells can kill cells that are infected with viruses and Cytotoxic T cells are known to activate B cells.
Answers: 1
Biology, 22.06.2019 06:30
Is there any solid scientific evidence that humans have been cloned?
Answers: 1
Biology, 22.06.2019 07:00
Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome
Answers: 2
Biology, 22.06.2019 07:30
The hematodinium parasite becomes less of a problem for the blue crab when the crab is very young. fishing is thriving in the region. the crab moves to less salty water. a significant percentage of the population is impacted.
Answers: 3
Biology, 22.06.2019 09:00
Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation
Answers: 2
28. Which of the following statements are accurate?
A. none of the answers are correct
A. none of the answers are correct
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