Article date: February 1962
By: J. BROOME, R. K. CALLOW, W. FELDBERG, B. A. KOVACS in Volume 18, Issue 1, pages 87-100
Stable extracts were obtained from plant tumours, such as Hungarian oak galls and crown galls of infected tomato plants, which, injected intraperitoneally into guinea‐pigs, protected the animals against a subsequent histamine aerosol. The protection produced by the oak gall extracts lasted for a few days and that produced by the crown gall extracts, if injected in sufficient amounts, sometimes for a few weeks.
DOI: 10.1111/j.1476-5381.1962.tb01153.x
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