Specific collagens and insoluble proteins called cuticlins are major constituents of the nematode cuticles. The epicuticle. which forms the outermost electron-dense layer of the cuticle. is composed of another category of insoluble proteins called epicuticlins. https://www.jmannino.com/limited-find-We-The-People-Flag-Unisex-Poly-Rich-Blend-Tee-great-choice/