File:Hamilton1943 plate01.jpg: Difference between revisions

Plate 1

Fig. 1. Photomicrograph of ovum No. 1 in the living state.

Fig. 2. The same ovum immediately after fixation.

Fig. 3. A section of ovum No. 1 showing the metaphase of The dark areas on the vitellus are corona radiata cells on the the second maturation division. The first polar body (out upper or lower surface of the zona. x .180. of focus in the upper right—hand corner) is seen. The vitellns has shrunk from the zona pellucida and most of the corona radiata cells have been lost. (cf. P]. I, fig. I). x820.

Fig. 4. Photomicrograph of ovum No. 2. A con} lete sperm is seen x 480. in the zona pellucida: other sperm heads are visiblle. At the upper right-hand corner of the photograph globular detritus is seen. x 480. w..H.

Fig. 5. A surface view of the endometrium of specimen No. 3. The smooth elevation produced by the implanting embryo is seen. The endometritnn shows fissures :md crct'iccs which for the most part are associated with the mouths of the uterine glands. x 15.

Reference

Hamilton WJ. Barnes J. and Dodds GH. Phases of maturation, fertilization and early development in man. (1943) J. Obstet. Gynaecol, Brit. Emp., 50: 241-245.