Here's what rhymes with microsomal.

Consider these alternatives

hydrolase / was esterase / case triglyceride / side monooxygenase / case hexokinase / thiokinase glutathione / testimony prolyl / while dismutase / days lentiviruses / viruses cytochrome / home deoxygenation / education oligosaccharides / rights phosphatidylinositol / people stereospecific / specific