cytochemical analysis showed that the yolk in the form of granules or platelets , in the constituting itself the most prominent cytoplasmic inclusion of amphibian eggs , contains a protein moiety consisting of individual typical amino acids lacking tryptophan in triturus , a carbohydrate fraction consisting of neutral mucopolysaccharides distributed in the superficial layer of each platelet , and phospholipids , phosphoproteins and lipoproteins which are present only in the main body of the same platelets .
C0033684
protein
C0031689
phosphoproteins