Presence of a insulin-like growth factor I (somatomedin C) immunoreactive substance in GH producing cells in the bovine anterior pituitary.

Using a double immunoenzyme labelling method with avidin-biotin-horseradish peroxidase and -alkaline phosphatase complexes, we clearly demonstrated that recombinant human IGF-I immunoreactive substance was found in the GH producing cells of the bovine anterior pituitary.