ON INDICATORS IN ANIMAL TISSUES

On the Proteolytic Enzymes of Animal Tissues

It has long been known that aqueous extracts of various animal tissues (spleen, kidney, liver, etc.) exhibit proteinase activity, which was assigned to an intracellular enzyme named cathepsin (1). The finding of peptide derivatives which serve as substrates for well defined proteinases (pepsin, trypsin, chymotrypsin) led to the use of these synthetic compounds for the study of the proteolytic a...

Phosphorus Compounds in Animal Tissues

The concept that nucleic acids are intimately associated with fundamental cellular processes has gained considerable favor within the last few years. This can undoubtedly be attributed to the researches of Caspersson and his associates. Caspersson, with the aid of ultraviolet spectrophotometry, has been able to measure the nucleic acids in various parts of the cell under a variety of experiment...

Deoxyribosyl compounds in animal tissues.

Several types of deoxyribosyl compounds have been found in the acidsoluble fraction of normal and malignant tissues (l-8). In 1955 Potter and Schlesinger (1) reported the isolation of deoxynucleoside mono-, di-, and triphosphates from extracts of calf thymus. More recently LePage (7) reported the isolation of deoxyadenosine triphosphate from a tumor. Schneider (2), using a microbiological assay...

Drug residues in animal tissues.

Studies on nitrogen pool of animal tissues. I. Ox ocular tissues. II. Ox nervous tissues.

Concentrations of ampholytes in the nitrogen pool of ox ocular tissues and nervous tissues were analyzed systematically by an automatic amino acid analyzer with a special reference to their minor components. DCEC was found in lens and also in nervous tissues. Ophthalmic acid was found in lens (highest), in retina (moderate), and in vitreous humor and spinal cord (trace). Glutathione content was...