Before a lymphocyte encounters an antigen, it is referred to as a___________________
Fill in the blank with the correct word.
Answer: Naive lymphocyte
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The clusters [sk] and [ks] cannot occur in the same word positions in General American English. This is an example of the
a) phonetic inventory b) phonemic inventory c) phonotactics of a language d) allophonic variations of a language
Hot flashes during perimenopause are thought to be the result of decreased ________ levels.
A. estrogen and progesterone B. progesterone C. oxytocin D. LH E. FSH
The white matter of the brain derives its color from myelin
Indicate whether this statement is true or false.
When it is cold, the __________ contracts and draws the testes closer to the body to keep them warm.
A. cremaster muscle B. pampiniform plexus C. corpus spongiosum D. perineum E. corpus cavernosum