Rudimentary horn is a developmental anomaly of the uterus. The rudimentary horn analogue may or may not communicate with the uterus. Most of the rudimentary horns are non communicating. Here pregnancy occurs from transperitoneal migration of the sperm or ovum from opposite side. This observation was made from corpus luteum seen on the contralateral side to the rudimentary horn containing a preg...

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...

In partial molar pregnancies, the trophoblast cells have three sets of chromosomes (triploid). Two sperm are believed to fertilise the ovum at the same time, leading to one set of maternal and two sets of paternal chromosomes. Around 10% of partial moles are tetraploid or mosaic in nature. There is usually evidence of fetal tissue or fetal blood cells in a partial molar pregnancy. An embryo may...

Human in vitro fertilization has become a widely accepted method of treatment for infertile couples. The list of indications for this technique is rapidly growing and includes oligospermia, endometriosis, and unexplained infertility. The techniques of follicular recruitment, ovum maturation, and follicular aspiration, as well as laboratory culture techniques, are described. The various factors ...

human ovum is fully dealt with, the present volume including the earlier stages, concerning which there are still important gaps in oui knowledge, and a detailed account ot the development of the integuments, the bony, connective tissue and muscular systems. Hie geneial account of the development is also given, and valuable chapters on the membranes, the determination ot the age of an embryo or...

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...

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...

BACKGROUND Chromosomal disorders are the most common cause of first trimester spontaneous abortion. Among the human chromosomes, chromosome no.9 was the most common structural chromosomal variant and it is not thought to be of any functional importance, which often considers as a normal variation in structural polymorphisms, nevertheless there are some studies which claim that there is an assoc...

The pregnancy rate resulting from matings at a single oestrus in beef cattle averages 70% for natural mating (Turman, Laster, Renbarger & Stephens, 1971) and 60% for artificial insemination (Laster, Glimp & Gregory, 1972). The sources and causes of low pregnancy rates have not been defined, but might include variation in time of ovulation relative to deposition of spermatozoa in the female repr...

OBJECTIVE This study was designed to report the status of assisted reproductive technology (ART) therapy in South Korea between January 1, 2012 and December 31, 2012. METHODS A localized online survey, originally developed by the International Committee Monitoring Assisted Reproductive Technologies, was first launched and provided to all available ART centers via email in 2015. Fresh embryo t...