Abstract
Hyaline cartilage from the knee or rib of newborns was divided in neutral salts into a soluble and insoluble part. The insoluble part was treated with collagenase and was separated into 2 peaks by gel chromatography on Sephadex G-200. The 1st peak revealed a low concentration of proteins, no hydroxyproline, and very high levels or uronates. In the 2nd peak, very high values of hydroxyproline and very low values of uronate were found. Thus the 1st peak contained only proteoglycans and no collagen, while the entire collagen was found in the 2nd peak. The individual fractions were inoculated into rabbits to obtain antibodies. Compared to the fraction containing macromolecular proteoglycans, antisera proved remarkably suitable particularly for analysis of human spleen, yet also of other organs. These anti-cartilage antisera visualized primarily spongy structures of pericapillary sheaths and circumferential reticulum of the periarterial lymphatic sheaths, but to a lesser extent also other extracellular structures of the spleen and of other organs.
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