Antifertility experiments have been made on mice for short-term and long-term observation with castor bean extract and ricin,and which showed apparent effects of antifertility.

利用蓖麻提取物对昆种小鼠进行了短期与长期的抗生育实验,研究发现蓖麻提取物(蓖麻油和蓖麻蛋)对小鼠有的抗生育作用。