title: Intracellular Ca modulates sensitivity and time scale in Limulus ventral photoreceptors.
mesh_terms: D000818:Animals; D001097:Arachnida; D002118:Calcium / Q000494:pharmacology*; D008564:Membrane Potentials / Q000187:drug effects*; D010786:Photoreceptor Cells / Q000187:drug effects* / Q000502:physiology; D013997:Time Factors
chemical_list: D002118:Calcium