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Author Question: Which of the following individuals first described the ABO blood group system? a. Decastello b. ... (Read 58 times)

mrsjacobs44

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on: Jun 25, 2018
Which of the following individuals first described the ABO blood group system?
 
  a. Decastello
  b. Landsteiner
  c. Sturli
  d. Yamamoto

Question 2

Track the path of maturation of the T lymphocyte.
 
  What will be an ideal response?


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krakiolit

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Reply #1 on: Jun 25, 2018
Answer to Question 1

Answer: b

Answer to Question 2

Answer: Precursor T cells leave the bone marrow (where they develop from the committed lymphoid progenitor cell) and enter the thymus through arterioles in the cortex. The thymus is the maturation compartment for T-lymphocytes. As they travel through the cortex and medulla, the T-lymphocytes interact with epithelial cells and dendritic cells, which provide signals to ensure that T cells recognize foreign antigen, not self-antigen. In addition, the T cells undergo substantial proliferation.


mrsjacobs44

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Reply 2 on: Jun 25, 2018
Excellent

amit

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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