Abstract:A combination of gelfiltration and reverse-phase high performance liquid chromatography with postcolumn antitumour assay has been developed. A melatonin insensitive human melanoma cell strain was used to guide the purification of the antitumour effect of an ovine pineal aqueous extract (MW 1,000 to 10,000) that possessed the ability to decrease the hypophysiotropic activity of rat and mice hypothalami in vitro. This allows a specific identification of a pineal factor (MW 2,000 to 6,000) that inhibits the growt… Show more
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