[Injection of drugs and its problems].
D000818:Animals; D000830:Animals, Laboratory; D005260:Female; D007267:Injections / Q000379:methods*; D007273:Injections, Intramuscular / Q000379:methods; D007274:Injections, Intraperitoneal / Q000379:methods; D007275:Injections, Intravenous / Q000379:methods; D007279:Injections, Subcutaneous / Q000379:methods; D008297:Male; D051381:Rats