The use of beef liver catalase as a protein tracer for electron microscopy - PubMed (original) (raw)

The use of beef liver catalase as a protein tracer for electron microscopy

M A Venkatachalam et al. J Cell Biol. 1969 Aug.

Abstract

Beef liver catalase was injected intravenously into mice, and its distribution in the kidney, myocardium, and liver was studied with the electron microscope. A specific and relatively sensitive method was developed for its ultrastructural localization, based on the peroxidatic activity of catalase and employing a modified Graham and Karnovsky incubation medium. The main features of the medium were a higher concentration of diaminobenzidine, barium peroxide as the source of peroxide, and pH of 8.5. Ultrastructurally, the enzyme was seen to permeate the endothelial fenestrae and basement membranes of tubular and glomerular capillaries of the kidney. The urinary space and tubular lumina contained no reaction product. In the myocardial capillaries, the tracer filled the pinocytotic vesicles but did not diffuse across the intercellular clefts of the endothelium. In liver, uptake of catalase was seen both in hepatocytes and in Kupffer cells.

PubMed Disclaimer

Similar articles

Cited by

References

    1. J Biophys Biochem Cytol. 1961 Feb;9:409-14 - PubMed
    1. J Exp Med. 1966 Dec 1;124(6):1123-34 - PubMed
    1. J Biol Chem. 1963 Oct;238:3256-61 - PubMed
    1. J Histochem Cytochem. 1966 Apr;14(4):291-302 - PubMed
    1. J Cell Biol. 1967 Oct;35(1):213-36 - PubMed

MeSH terms

Substances

LinkOut - more resources