Figure 3

Immunohistochemical staining of Connexin 43 at different stages of pregnancy. (A) Non-pregnant (group 1), (B) term-pregnant (group 2), (C) in normal labour (group 3), D in prolonged labour (group 4), (E) in normal labour, magnification 1 × 400 with oil, (F) negative control. Magnification in A, B, C, D and F is 1 × 200 Positive staining is brown. The grading of staining is presented in Table 3.