For tracer injections, birds were anaesthetized by intramuscular injection of ketamine (Pfitzer, Freiburg, Germany) / rompun (Bayer, Leverkusen, Germany), and their heads were fixed in a custom - built stereotactic apparatus. (journals.plos.org)
Mice were anesthetized with intramuscular injections of dexmedetomidine hydrochloride (0.4 mg / kg; Pfizer), followed by ketamine hydrochloride (40 mg / kg; Bioniche Pharma). (jneurosci.org)
DIROBAN should be administered by deep intramuscular injection in the lumbar (epaxial) muscles (L3 — L5) ONLY. (zoetisus.com)