Stereology: a working tool for cell biologists

Normal versus abnormal structure: considerations in morphologic responses of teleosts to pollutants

Consideration of newer more quantitative morphologic approaches to the study of aquatic pollutants can provide opportunity for collaborative/integrated studies with other subdisciplines in toxicology. Current commonly employed morphologic approaches result largely in subjective findings difficult to analyze statistically and often are directed at levels of structural organization inconsistent with biochemical and physiological approaches. We review some of the methods and approaches available for correlated structure/function studies and present examples from normal and altered skin, gill, and liver of teleosts.

Immunocytochemical investigation of native matrix granules of the rat heart mitochondrion

We have examined the ultrastructure and the protein content of native matrix granules (NMG) in rat heart mitochondria, by postembedding immunocytochemistry. Cytochrome c oxidase was found to be present in these granules. It is believed that these granules contain incomplete inner mitochondrial membrane fractions, which can be incorporated in the membrane after stimulation of the metabolism.