Twisted fibrous arrangements in biological materials and cholesteric mesophases.
D000818:Animals; D001181:Arthropods / Q000166:cytology*; D003386:Brachyura / Q000166:cytology; D002816:Chordata, Nonvertebrate / Q000166:cytology*; D002875:Chromosomes; D003460:Crystallization; D056890:Eukaryota / Q000166:cytology*; D006110:Grasshoppers / Q000166:cytology; D008858:Microscopy, Phase-Contrast; D008859:Microscopy, Polarization; D008954:Models, Biological; D012867:Skin / Q000166:cytology*