The VERL, a giant, unbranched glycoprotein comprising 30% of the VE, exists in the vitelline envelope and fuses with lysin by species-specificity.

鲍卵细胞膜上存在细胞溶素受体，它不支白子，占据了卵黄膜30％组，可以专一性地与细胞溶素相结合。