T cell activation requires
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Sleep apnea is related to ___ while sleeping.
___ is the liquid part of the blood of which 92% is water and the remaining 8% is proteins, minerals, hormones, enzymes and so on.
Rickets is caused due to the deficiency of
___ are the carriers of heredity material.
Slow-growing large coloured patches on the bark of trees are the examples of symbiotic life forms called ______.
____ forms a common passage for both urine and sperms in human males.
___, present in the centre of a flower, forms the female reproductive part.