TABLE 2

In vivo analysis of cell proliferation by immunohistochemistry: Ki-67 labeling indices in mammary glands

ControlsHMR 1964
HR 1799 (human insulin; 2 × 20 IU/kg)
2 × 20 IU/kg2 × 50 IU/kg
n29231419
Metestrus5.06 ± 2.385.13 ± 1.695.10 ± 3.595.48 ± 3.46
Diestrus6.11 ± 2.394.74 ± 2.235.87 ± 2.006.47 ± 4.04
Estrus6.03 ± 0.736.06 ± 2.905.94 ± 3.175.99 ± 2.83
  • Data are means ± SD of the indicated number of animals. In vivo proliferation on mammary glands was determined as described in research design and methods. The labeling index indicative for proliferation was expressed as the percentage of positive labeled nuclei per total number of counted nuclei (at least 1,000).