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Biomedical subjects

M H Ross

Publications and source records attributed to M H Ross.

At least 91 records · Page 5Linked to original sources

Perineurium: evidence for contractile elements.

Electron-microscopic study of mouse sciatic nerve reveals that perineurial cells contain filaments and associated opaque regions similar to those observed in smooth muscle. This finding is consistent with obsevations Which suggest that nerve might have a contractile property. In addition to their function in maintaining the connective tissue stroma of perineurium, as well as being a selective diffusion barrier, perineurial cells may serve the nerve in a contractile capacity.

Animals↗

Genetics and linkage of aldrin resistance in the German cockroach, Blattella germanica (L.).

The inheritance mechanism and linkage association of cyclodiene resistance were studied in 2 cyclodiene-resistant strains of the German cockroach. The resistant strains were crossed to each other, to an unmarked susceptible strain, and to 6 susceptible marker strains. The progeny from succeeding generations were tested for resistance to aldrin using a dipping method or a time-exposure method, and were examined for markers in linkage tests. The results show that cyclodiene resistance (R-Cyclo) is inherited as a simple autosomal semidominant trait which is allelic in the 2 resistant strains. Linkage studies indicate that R-Cyclo is independent of linkage groups II-VI, but is linked with the group VII trait curly wing at a distance of 3.4+/-1.0-6.2+/-1.4.

Animals↗

Contractile cells in human seminiferous tubules.

Electron microscopic study of the peritubular connective tissue in human testis reveals the presence of "contractile-type" cells rather than of typical fibrocytes. Their cytoplasm has numerous fine filaments and other components. characteristic of smooth muscle cells. The rough-surfaced endoplasmic reticulum, however, is relatively prominent In some instances, the nuclear surface appears scalloped or folded, and the cell surface presents an irregular profile, similar to that of contracted cells.

Adult↗