
The embryonic origin of the ampullate silk glands of the spider Cupiennius salei
Keywords: عنکبوت; Spider; Silk; Spinneret; Ampullate gland; Ectoderm; InvaginationASp, MSp, PSp, anterior spinneret, medial spinneret, posterior spinneret; iASp, iMSp, iPSp, invagination sites on ASp, MSp, and PSp; lbO4, lbO5, limb buds of opisthosomal segments 4 and 5; Ma