DRUGS PREPARATIONS ACTIVITY ASSAYED
Heparin whole blood of ox with throm Prolongation of blood
bokinase extract and acetone clotting time
dried ox brain
Antibiotics Suitable micro-organism Inhibition of growth of micro-
grown on suitable nutrient organism
agar medium
Vitamin D Rats maintained on richetogenic Alleviation of richetic
diet stage
Insulin Rabbits Lowering of blood -sugar level
Mice Convulsions and /or death due to hypoglycaemia
Isolated rat diaphragm Increase in glycogen content
Rat s epididymal fat Increased metabolism of glucose indicated by increased in CO2 production
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