One laboratory stock of Drosophila melanogaster has very reduced or vestigial wings.果蝇的一种实验品系,翅膀缩小,称为残翅.THREE NEW SPECIES OF NICRICOLOR SPECIES - GROUP OF DROSOPHILA ( LORDIPHOSA ) ( DIPTERA: DROSOPHILIDAE )黑色拱背果蝇种组三新种记述...
粘膜或者皮肤上的破裂处都可能成为病毒入侵的通道.Mucous membranes or breaks in the skin were likely alternative entryways into the body.他的手肘从他衬衫袖的破裂处露出来.He is up to his elbow soapsuds , washing his shirt.生殖器发炎可能增加染病的机率,这一病毒可能通过由其它性病引起的皮肤破裂处进入人体....