A of element of Bao of solid annulus of animal experiment testimony and sulfur Zun purine are fetal to the animal poisonous sex action, but fetal to the person influence was not confirmed.

• 动物实验证实环孢素a和硫唑嘌呤对动物胎儿有毒性作用，但对人胎儿的影响未被证实。