title: Sperm motility in the horseshoe crab, Limulus polyphemus L. I. Sperm behavior near eggs and motility initiation by egg extracts.
mesh_terms: D000818:Animals; D005110:Extracellular Space / Q000502:physiology; D005260:Female; D006737:Horseshoe Crabs / Q000502:physiology*; D006863:Hydrogen-Ion Concentration; D008297:Male; D010063:Ovum / Q000502:physiology*; D012623:Seawater; D013081:Sperm Motility; D013696:Temperature