title: Movement of spermatozoa in viscous environments.
mesh_terms: D000818:Animals; D008297:Male; D008747:Methylcellulose; D012617:Sea Urchins / Q000502:physiology; D013081:Sperm Motility; D013094:Spermatozoa / Q000502:physiology*; D014783:Viscosity
chemical_list: D008747:Methylcellulose