Figure 2From: Ecdysteroids and oocyte development in the black fly Simulium vittatumSDS-PAGE Separation of vitellogenin protein in Simulium vittatum on SDS gels. Lane 1, molecular weight markers (200, 116, 97, 66 and 45 kDa). Lane 2, ovaries with proteinase inhibitors; lane 3, ovary extract without proteinase inhibitors. Ovaries were removed 36 hours after eclosion.Back to article page