The present study was undertaken to evaluate the therapeutic efficacy of LPS (E. coli lipopolysaccharide) in 20 infectious repeat breeder crossbred cows brought to the AI centre of Department of Veterinary Gynaecology and Obstetrics of College of Veterinary Science and Animal Husbandry, Mhow and in nearby Government AI centres. Animals were divided into two groups of ten in each. | Immunomodulatory effects of LPS E. coli lipopolysaccharide in infectious repeat breeder crossbred cows