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Table 1 Incidence of microscopic lesions and other microscopic abnormalities in NMU-treated whole mounted abdominal-inguinal mammary glands

From: Histological analysis of low dose NMU effects in the rat mammary gland

NMU dose (mg/kg BW) 12 weeks incidence (%) Ω 22 weeks incidence (%)Ω 25–30 weeks incidence (%) §
0 0/6 (0) 0/5 (0) 0/9 (0) ab
10 0/6 (0) 0/6 (0) 2/38 (5.3) a
20 0/6 (0) 1/6 (16.6) 9/37 (24.3) bc
30 2/5 (40.0) 3/5 (60.0) 9/27 (33.3) c
50 4/5 (80.0) 3/4 (75.0) 21/26 (80.8) d
  1. Ω indicates that the incidence was calculated 'per mammary gland' whereas § denotes the incidence calculated using abdominal-inguinal mammary glands from the left and right side of each animal. Different superscripts denote statistically significant differences (p < 0.05).