. Journal of morphology. all spindle never gets beyond the equatorialplate stage. The second polar body is always fully twice aslarge as the first, and stains more deeply (Fig. 5). During itsprotrusion the interzonal fibrils of the spindle are brought to-gether in a sheaf-like bundle at the boundary line between thecells, and there form a peculiar deeply staining plate, which Arch. f. mikr. Attat, Bd. 40, 1892. 3o8 WHEELER. [Vol. X. may be likened to the more extensive middle-plate in thickening persists for some time on the inner surface ofthe second polar body (Fig. 6). Both the
. Journal of morphology. all spindle never gets beyond the equatorialplate stage. The second polar body is always fully twice aslarge as the first, and stains more deeply (Fig. 5). During itsprotrusion the interzonal fibrils of the spindle are brought to-gether in a sheaf-like bundle at the boundary line between thecells, and there form a peculiar deeply staining plate, which Arch. f. mikr. Attat, Bd. 40, 1892. 3o8 WHEELER. [Vol. X. may be likened to the more extensive middle-plate in thickening persists for some time on the inner surface ofthe second polar body (Fig. 6). Both the nucleus of the second polar body and the femalepronucleus often consist at first of several distinct vesicles, butthese soon fuse to form typical spherical or oval nuclei. Whilethe enlarging female pronucleus is moving back from the apicalpole towards the center of the o.^^, a mass of archoplasm con-taining two centrosomes may be distinguished near its lowerface (Fig. 5). / have never been able to find any traces of such.
Size: 1443px × 1732px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1, booksubjectphysiology, bookyear1887
