The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
Croton Oil
a thick brownish or yellow liquid obtained from the seeds of the purging croton (Croton tiglium). Croton oil acts as a strong cathartic and irritates the skin and mucous membranes. Even in small doses (over 20 drops), it can be fatal.
Mice were anesthetized with ether and 20 [micro]l of an acetone solution containing 0.4 [micro]g croton oil and appropriate amounts of test samples were applied to the inner surface of the right ear of each mouse.
Inflammatory response was induced on the inner surface of the right ear (surface: about 1 [cm.sup.2]) by application of 80 [micro]g of Croton oil dissolved in an appropriate vehicle, as reported below.
In Group I, 93.75% of animals treated with DMBA and croton oil developed skin papillomas, and the average number of tumors per mouse (tumor burden) was 6.53.98.
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