Glucagon gene and the glucagon like peptide or GLP1 gene are peptide hormones, produced by alpha cells of the pancreas to raise the concentration of glucose in the blood as opposite of insulin, which lowers the glucose. Anti human glucagon and glp1 antibodies are used to study diabetes.
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Rats are used to make rat monoclonal anti mouse antibodies. There are less rat- than mouse clones however. Rats genes from rodents of the genus Rattus norvegicus are often studied in vivo as a model of human genes in Sprague-Dawley or Wistar rats.