Protargol silver impregnation and neuronal selectivity. Light and electron microscopic observations.


The neuronal selectivity of protargol silver was determined in embedded and cultured nervous tissue by light (LM) and transmission electron microscopy (TEM). Ultrastructurally, silver (85-140 A in diameter) was found deposited in neuronal, but not glial, perikarya and cell processes. Usually, the silver grains were arranged in elongated arrays that were… (More)