A procedure for intravenous injection using external jugular vein in Mongolian gerbil (Meriones unguiculatus)

The Mongolian gerbil is commonly used in medical research. Intravenous administration of compounds in gerbils is difficult as tail vein injection sites are not visible. The present study describes a method for intravenous administration into the jugular vein in Mongolian gerbil by using an 'over-the-needle' catheter under anaesthesia. The catheter penetrates the pectoral muscle and is easily inserted into the vein. The method is simple and avoids extensive surgery in the animals.