The most potent chemicals for activating pain receptors are

a. bradykinins.
b. histamines.
c. prostaglandins.
d. cytokines.
e. leukotrienes.


A

Biology & Microbiology

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At what stage of the meiotic cell cycle and during what chromosomal configuration does crossing over occur?

What will be an ideal response?

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Animals vary the composition of their urine depending on their environment and their need to conserve water

Indicate whether the statement is true or false

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