The determination of a baby’s sex begins at the chromosomal level with the insemination of the ovum. Further sexual differentiation follows during the subsequent embryogenesis. However, chromosomal anomalies, gene mutations, and other exogenous or endogenous factors can cause disorders of sexual differentiation. These disorders manifest during childhood or at the latest in puberty, making patie...

Einige Analysten haben aufgrund nachgelassener Beigeisterung für mobile Dienste den M-Commerce bereits totgesagt [GK02]. Nicht erfüllte Umsatzerwartungen, zusammen mit Fehlschlägen im technischen Bereich, haben in den letzten Jahren sicherlich für eine gedämpfte Stimmung gesorgt. Doch ist die Aussicht wirklich so negativ? Laut einer Studie von Ovum aus dem Jahre 2003 wird, selbst bei sehr eng g...

The determination of a baby’s sex begins at the chromosomal level with the insemination of the ovum. Further sexual differentiation follows during the subsequent embryogenesis. However, chromosomal anomalies, gene mutations, and other exogenous or endogenous factors can cause disorders of sexual differentiation. These disorders manifest during childhood or at the latest in puberty, making patie...

This paper reports the results of a study of the effect of chronic long term stimulation of the AIJ on tubal functions and fertility in rabbits. Preliminary experiments show that a 6 Volt 48 Hz 1 ms pulse stimulation with implanted electrode the tubal diameter and the high activity motility bursts were also fewer after stimulation. Therefore the contraceptive action observed in rabbits could be...

We implemented hospital information system (HIS) alerts to deter unnecessary test orders for ovum and parasite (O&P) exams and Clostridium difficile PCR. The HIS alerts decreased noncompliant O&P orders (orders after >72 h of hospitalization) from 49.8% to 30.9%, an overall decrease of 19%, and reduced noncompliant C. difficile PCR orders (orders <7 days after a previous positive result) from 3...

Repeated oocyte collection by transvaginal ultrasound-guided follicular puncture (Ovum Pick-Up: OPU), implicitly associated to in vitro embryo production (IVEP), has become alternative and competitive to superovulation for embryo production in cattle. It is alternative because it can be applied successfully irrespective of the reproductive status of the donor, i.e. in pregnant and acyclic anima...

This paper reports on the fine structure of rat oocytes at stages before ovulation, during maturation, fertilization, and early cleavage. The study includes parallel observations on light and electron microscope preparations with attempted correlations. The follicular cells of the ovarian egg are described as sending long processes through the zona pellucida to the egg surface where they mingle...

CONTEXT Transperitoneal migration is a mechanism for oocyte retrieval that is generally demonstrated in certain cases of ectopic pregnancy. However, the association between these two conditions is debatable. The rare occasions on which intrauterine pregnancy following transperitoneal migration can be documented are an opportunity for studying this topic. CASE REPORT We report the case of a fe...

Forty-three Angora does were treated with progesterone and an equine anterior pituitary extract to induce multiple ovulation at pre-determined times. Thirty-nine does were subsequently served by Angora bucks. They had shed 386 ova, of which 328 (85%) were recovered and 281 (86%) were fertilized. A total of 275 fertilized ova were transferred to 158 recipient feral goats in which the time of oes...

Cloning animals entails transferring the nucleus of a cell obtained from the individual to be cloned into an unfertilized ovum that has had its metaphase chromosomes removed. If successful, the transferred nucleus is re-programmed so to direct development of a new embryo that is genetically identical to the animal from which the cell was obtained. This embryo can then be transferred into a surr...