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1 results

  • Interference of fixatives and fixation period on the morphologic analysis of ovarian preantral follicles

  • D.C.C. Brito, L.V.S. Ñaupas, S.S. Souza, G.L.H. Alcântara, J.R. Figueiredo, R.R. Santos, A.P.R. Rodrigues
  • Journal:
    Zygote / Volume 30 / Issue 1 / February 2022
    Published online by Cambridge University Press:
    14 May 2021, pp. 144-147

  • Ovine ovarian fragments (3 × 3 × 1 mm) were fixed in neutral buffered formalin (NBF), Carnoy’s solution (CAR), Davidson’s solution (DAV), or paraformaldehyde (PFA) for 12 h or 24 h. After this fixation time, each fragment was prepared for histological analysis. Although fixative and fixation period did not affect follicular and stromal cells density, the percentages of morphologically normal primordial and primary follicles was affected by the fixative type and period of fixation. Paraformaldehyde was not indicated as a fixative for ovarian fragments. Formalin was a suitable fixative only when the period of fixation was 12 h, while Carnoy was efficient after a fixation period of 24 h. In conclusion, the most indicated fixative for the morphological evaluation of ovarian preantral follicles was DAV, regardless of the fixation period, that is 12 or 24 h.