Ionic regulation in the snail, Helix aspersa.
D000818:Animals; D002118:Calcium / Q000097:blood* / Q000494:pharmacology; D004032:Diet; D005215:Fasting; D008274:Magnesium / Q000097:blood*; D011188:Potassium / Q000097:blood* / Q000494:pharmacology; D012908:Snails / Q000378:metabolism*; D012964:Sodium / Q000097:blood*; D013268:Stimulation, Chemical; D013997:Time Factors; D014882:Water-Electrolyte Balance
D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium