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ABO Blood group

Landsteiner’s law

The reciprocal relationship between antigens on the red blood cells and antibodies in the serum is known as Landsteiner’s law. Karl Landsteiner suggested that the […]

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Cholinergic drugs

Cholinergic Drugs made Simple

Cholinergic drugs promote the action of the neurotransmitter acetylcholine. These drugs are also called parasympathomimetic drugs because they produce effects that imitate parasympathetic nerve stimulation. […]

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