The activity of an amount of an extract of the anterior lobe of the hypophysis which, given daily for 5 days, will cause the thyroid of a guinea pig (weighing 200 g) to reach a weight of 600 mg.
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duck plague virus
theromorpha
neuroskeleton
MalD protein, Streptococcus pneumoniae
Euglena gracilis
growth quotient
discission
centipede