The origin and potential uses of the method of egg transfer in mammals are briefly surveyed.
An experiment is described in which genetically labelled fertilized mouse eggs were …

The first experiments employing transplantation of mammalian eggs were reported by
Heape more than 40 years ago. He transferred the eggs of an Angora rabbit into the uterus …

Four-day-old mouse embryos were transferred to the uterine lumen of virgin cyclic and
ovariectomized mice; the eggs' implanted'and developed only in mice whose endometrium …

Ova were removed from donors 63‐68 hours after ovulation and placed in the uteri of
pseudopregnant recipients of the same pregnancy age. In transfers of ova from young (2 1/2 …

ABSTRACT Mouse 2-and 8-cell and rat 2-, 4-, and 8-cell eggs develop into blastocysts when
reciprocally transferred to the oviduct of the other species. Some rat eggs, after attaining the …

When pre-implantation embryos were transferred to the oviducts of pseudopregnant
recipient females, on the 1st day post coitum, the percentage of females becoming pregnant …

ABSTRACT About 80% of 8-cell mouse eggs developed to the blastocyst stage in culture,
whether the zona pellucida was left intact, or removed with pronase (pre-incubated and …

Abstract ONE-DAY-OLD ova from superovulated♀♀ developed into normal young only
when transferred to the tubes of the recipient one day before, at the same time as, or one or …

Ova collected from the oviducts of prepuberal mice 13, 17 or 21 hrs. after the injection of
gonadotropin to induce ovulation were transferred, in groups of 8, to the right bursa of …

Previous experiments demonstrated that a particular developmental relationship was critical
in determining whether or not rat ova transferred asynchronously into the uteri of recipient …