منابع مشابه
Some properties of an unidentified chick growth factor found in condensed fish solubles.
In previous papers (1,2) evidence was presented to show that condensed fish solubles produced a marked increase in the growth rate of chicks on diets containing an adequate level of vitamins and essential amino acids. Berry, Carrick, Roberts, and Hauge (3) found that a water extract of fish solubles was also active in stimulating the growth of chicks. Very little other information on the proper...
متن کاملAn Unidentified Pleuropneumonialike Organism Isolated During Passages in Chick Embryos.
Since a large number of developing eggs are employed in the making of vaccines and the propagation of viruses and rickettsiae, it is of primary importance to detect any spontaneous -infection occurring in chick embryos, especially with' those agents that are ifiterable. In the course of passing a strain of the virus of primary atypical pneumonia amniotically in the developing chick embryo (Eato...
متن کاملAn unidentified growth factor in the nutrition of Lactobacillus casei.
The complexity of the nutritive requirements of Lactobacillus casei is known. The organism develops slowly in synthetic or semisynthetic media such as the one described by Landy and Dicken (1942). Assay media for this organism therefore include crude supplements like peptone (Teply and Elvehjem, 1945) or trypsinized casein (Roberts and Snell, 1946). The active principle responsible for the shor...
متن کاملUnidentified Growth Factor for a Lactic Acid Bacterium.
Weinman, Donald E. (University of Georgia, Athens), George K. Morris, and William L. Williams. Unidentified growth factor for a lactic acid bacterium. J. Bacteriol. 87:263-269. 1964.-Lactobacillus bulgaricus Georgia strain required an unidentified growth factor, named Georgia bulgaricus factor (GBF), when grown on a semisynthetic basal medium. Aqueous extracts of torula yeast and beef liver wer...
متن کاملPartial purification and biological activities and properties of chick growth factors.
Cellular stimulating factors on cell proliferation in the supernatants of chick embryo carcases and adult muscles were studied. There were plural stimulating factors in embryonic and adult muscular supernatants that promoted cell proliferation without any supplement of sera and other materials. Salting-out methods with ammonium sulfate, ethanol fractionation, and isoelectric precipitation were ...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1955
ISSN: 0032-5791
DOI: 10.3382/ps.0340673