منابع مشابه
Calcium and Phosphorus Studies in the Chick*
The majority of the published data dealing with blood calcium and phosphorus changes in rickets is based upon blood determinations made after the appearance of rickets. Values obtained after the symptoms of rickets are evident do not show when t,he reduction in the calcium and phosphorus first t.akes place. A true understanding of the relation of vitamin D t,o these blood changes can be obtaine...
متن کاملEffect of diet on disaccharidase activity in the chick.
I. The influence of diet, particularly dietary carbohydrate, on the development of the intestinal disaccharidases of the chick was studied. 2. The maltase activity in the small intestine was similar in groups of 1;-d-old chicks that had been fed, from hatching, on diets containing either starch, glucose, maltose, sucrose, or a mixture of 50 yo glucose + 50 yo lactose, as the source of carbohydr...
متن کاملHistological studies on developing chick embryos treated with aminoguanidine sulfate.
Fertile eggs were injected 10 or 20 mg/egg of aminoguanidine sulfate (AGS) into the albumen on the 5th day of incubation and examined macroscopically and histopathologically. The marked abnormalities were observed in liver, gallbladder and spleen while other organs were not different from the control. The earliest change was an increase of mitotic cells in the liver which reached to the peak at...
متن کاملStudies on the Structure of the Chick Antidermatitis Factor*
The preparation of highly active concentrates of the chick antidermatitis factor has been described previously from this laboratory (1). It was shown at that time that the active substance was a hydroxy acid. Further results have indicated the close similarity of the active substance to pantothenic acid, a growth factor for yeast first described by Williams et al. (2). The properties previously...
متن کاملDevelopment of cranial placodes: insights from studies in chick.
This review focuses on how research, using chick as a model system, has contributed to our knowledge regarding the development of cranial placodes. This review highlights when and how molecular signaling events regulate early specification of placodal progenitor cells, as well as the development of individual placodes including morphological movements. In addition, we briefly describe various t...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1960
ISSN: 0032-5791
DOI: 10.3382/ps.0391018