Allann.艾伦(人名)allantoin llantoin尿囊素allantoic mesoderm[医] 尿囊中胚层allantoic placenta尿囊胎盘allantoic endoblast尿囊内胚层allantois chorioidea[医] 尿囊绒[毛]膜allantoic epithelium尿囊上皮Allantoate deiminase尿囊酸脱亚氨酶allantoidoangiopagus脐血管联胎allantiasis bacillus[医] 肉毒杆菌, 肉毒梭状芽胞杆菌allantoic inoculation尿囊接种