Abstract
Cytosomes (yellow pigment granules) of nerve cells of Anodonta cygnea have been investigated. The prolonged anoxia (5-8 days) induced a marked alteration of cytosomes involving the mass proliferation of membranes inside them at the expense of the homogeneous lipid droplets and granular matrix. These membranes are mainly of lipid character as revealed by the method of single glutaraldehyde fixation and subsequent acetone dehydration. Some of the normal cytosomes contain acid phosphatase activity being much more intense and of more general occurrence during prolonged anoxia. The functional significance of the structural alterations in the electron transport mechanisms is discussed.
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