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M Forrest

Publications and source records attributed to M Forrest.

27 records · Page 2Linked to original sources
PubMed1984

Mycoplasma glycophilum, a new species of avian origin.

A mycoplasma, designated strain 486, was isolated from the oviduct of an adult chicken. On the basis of its morphological, physical and cultural characteristics the organism was assigned to the class Mollicutes, order Mycoplasmatales. The guanine plus cytosine content of its DNA was estimated to be 27.5 mol%. The organism was inhibited by digitonin and it showed a growth response to sterol, although its minimal requirement was low. It neither showed helical forms nor hydrolysed urea and was hence assigned to the family Mycoplasmataceae, genus Mycoplasma. Strain 486 fermented glucose and reduced tetrazolium under anaerobic conditions. It did not hydrolyse arginine, aesculin or arbutin, nor did it produce films and spots or digest serum. Phosphatase activity was negative or very weak, and the organism adsorbed turkey but not chicken red blood cells. Serological tests (growth inhibition, indirect fluorescent antibody, double immunodiffusion and metabolism inhibition) with 75 currently accepted Mycoplasma species or serovars failed to identify the isolate. Thus strain 486 appears to represent a new species, for which the name Mycoplasma glycophilum is proposed. (NCTC 10194, ATCC 35277).

Animals↗
PubMedDate not supplied

Regression toward the mean in fertility research--an empirical study of semen quality.

Regression toward the mean denotes circumstances, where extreme observations tend to normalize at repetition. The phenomenon is caused by random variation and may occur whenever mainly persons with extreme values are subject to repeated examinations. We furnish empirical evidence that the phenomenon may be quantitatively important in fertility research with regard to some, but probably not all indicators of semen quality.

Fertility↗
PubMedDate not supplied

Anatomic variants of the hepatic arteries.

The anatomic variants of the hepatic arteries observed in 216 abdominal arteriographies were analysed. A comparison was made with MICHELS' work based upon 200 anatomic dissections, and SUZUKI'S investigation of 200 abdominal arteriographies. Seven not previously classified anatomic variants of the hepatic arteries were found. The large number of variants may be ascribed to intricacies in the development of the vascular supply in the embryo and to the normal caudal displacement of the liver taking place in the embryo and fetus. Knowledge concerning existing variants is important in performing surgery, embolization and intra-arterial infusion chemotherapy in the hepatic region.

Hepatic Artery↗