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Welcome to The Visible Embryo, a comprehensive educational resource on human development from conception to birth.

The Visible Embryo provides visual references for changes in fetal development throughout pregnancy and can be navigated via fetal development or maternal changes.

The National Institutes of Child Health and Human Development awarded Phase I and Phase II Small Business Innovative Research Grants to develop The Visible Embryo. Initally designed to evaluate the internet as a teaching tool for first year medical students, The Visible Embryo is linked to over 600 educational institutions and is viewed by more than ' million visitors each month.


WHO International Clinical Trials Registry Platform
The World Health Organization (WHO) has created a new Web site to help researchers, doctors and patients obtain reliable information on high-quality clinical trials. Now you can go to one website and search all registers to identify clinical trial research underway around the world!



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Disclaimer: The Visible Embryo web site is provided for your general information only. The information contained on this site should not be treated as a substitute for medical, legal or other professional advice. Neither is The Visible Embryo responsible or liable for the contents of any websites of third parties which are listed on this site.
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Pregnancy Timeline by SemestersFetal liver is producing blood cellsHead may position into pelvisBrain convolutions beginFull TermWhite fat begins to be madeWhite fat begins to be madeHead may position into pelvisImmune system beginningImmune system beginningPeriod of rapid brain growthBrain convolutions beginLungs begin to produce surfactantSensory brain waves begin to activateSensory brain waves begin to activateInner Ear Bones HardenBone marrow starts making blood cellsBone marrow starts making blood cellsBrown fat surrounds lymphatic systemFetal sexual organs visibleFinger and toe prints appearFinger and toe prints appearHeartbeat can be detectedHeartbeat can be detectedBasic Brain Structure in PlaceThe Appearance of SomitesFirst Detectable Brain WavesA Four Chambered HeartBeginning Cerebral HemispheresFemale Reproductive SystemEnd of Embryonic PeriodEnd of Embryonic PeriodFirst Thin Layer of Skin AppearsThird TrimesterSecond TrimesterFirst TrimesterFertilizationDevelopmental Timeline
Click weeks 0 - 40 and follow fetal growth
Google Search artcles published since 2007
 
September 23, 2011--------News Archive

Brain Wiring Continues Well Into Our 20s
The human brain doesn’t stop developing at adolescence, but continues well into our 20s, research from the University of Alberta demonstrates.

Vitamin D Deficiency Linked With Severe Asthma
Children with severe therapy-resistant asthma may have poorer lung function and worse symptoms due to lower levels of vitamin D in their blood.

Reprogramming Muscle Stem Cells to Regenerate
Researchers at the University of California, Berkeley, have turned back the clock on mature muscle tissue, coaxing it back to form new muscle.

September 22, 2011--------News Archive

BPA Changes In-Vitro Egg, Risking Down Syndrome
Bisphenol A is omnipresent in the plastic of common products such as beverage bottles, cans or baby bottles.

'Contaminants' Detected in Narragansett Watershed
Researchers say 'Emerging contaminants of concern' have been detected throughout the Narragansett Bay watershed.

New Plastics for Baby Bottles, Shopping Bags, More
With most of the plastics that define modern life dating to the1930s-1960s, a new breed of these ubiquitous materials are starting to gain a foothold.

September 21, 2011--------News Archive

Epigenetic Changes Don't (Neccessarily) Last
The first comprehensive inventory of epigenetic changes over several generations, shows that these changes often do not last.

Vacuum Device Makes Cellular Exploration Easier
New floating microscopic device will allow researchers to study a wide range of cellular processes.

September 20, 2011--------News Archive

11 Genetic Regions Link Schizophrenia/Bipolar Risk
Common genetic variants contribute to the risk of schizophrenia and bipolar disorder, an international research consortium has discovered.

Pediatric Brain Tumors
Regulatory protein presents potential drug target.

Crosstalk Between Bone, Fat and Pancreatic Cells
Cells in bone, fat and the pancreas appear to be talking to each other and one thing they likely are saying is, "Get moving."

September 19, 2011--------News Archive

Gene Catastrophe Causes Developmental Delay
Research has identified some cases of developmental delay or cognitive disorders associated with a sudden chromosomal catastrophe early in development.

Mom's High-Fat Diet 'Programs' Her Baby to Be Fat
This is the first study to demonstrate that a long-term maternal high-fat diet results in the deposition, in utero, of excess body fat in the newborn.

Length of Song Linked to Size of Bird's Upper Brain
Research has proven that the capacity for learning in birds is not linked to overall brain size, but to the relative size and proportion of their specific brain regions.

WHO Child Growth Charts

Researchers analysed the effects of Bisphenol A (BPA), a polymer widely used to manufacture plastics, in an in-vitro culture of human oocytes and demonstrated that exposure to this substance gravely altered the development of oocytes and future ova, possibly diminishing the fertility of a woman's offspring and at the same time increasing the risk of Down Syndrome in following generations.

The research, published in Human Reproduction, was carried out with a culture of 21,570 in-vitro oocytes.

Results showed that exposure to Bisphenol A in concentration levels permitted by health authorities is harmful to the fetus. BPA reduces the number of oocytes (cells which develop into ova) and therefore can affect negatively a woman's fertility and double the risk of chromosome exchange during the cell division process.

Specific observations of chromosome 21 in the development of 90 oocytes revealed that exposure to BPA could increase the risk of Down Syndrome in the future offspring of the fetus.

The research provides conclusive data for the debate on how BPA affects the health of individuals. Previous studies on mice and worms demonstrated that reproduction is affected and that exposure to BPA during gestation affects the viability and quality of the cells which later become ova developing in the fetus.

For the first time, human cells were used in a research to analyse the process of cell division of the oocytes - meiosis - in which chromosomes join and exchange material, i.e. meiotic recombination. Oocytes were cultured for 7, 14 or 21 days in different environments, with the presence of BPA and in control cultures without the substance.

Data obtained in vitro with human cells was practically identical to that obtained with in vivo animal models, while the effects on meiotic recombination, which could lead to the appearance of Down Syndrome, in humans are even greater than those observed in mice.

"According to our results, BPA does not directly affect the fertility of pregnant women, but that of their daughters and granddaughters. It is a multigenerational effect", explains UAB professor Montserrat Garcia Caldés, director of the research.

She goes on to say that "the increase in oocyte mortality in the fetus could diminish ovarian reserve numbers and the quality of the future mother's ova. At the same time, alterations in the recombination of chromosomes in the process of cell division increase the possibility of numerical alterations, such as monosomy (only copy of a chromosome in embryo cells) or trisomy (three copies)."

Concentration levels applied in the experiments were within the safety limits marked by European (EFSA) and US (EPA) authorities. The research therefore suggests that staying within legal limits does not imply that exposure to the substance is innocuous.

"We are exposed to BPA on a daily basis, mainly through oral exposure, since we can find it in lunch boxes, beverage bottles and food storage containers", Miguel Àngel Brieño-Enríquez reminds us.

First author of the article, Brieño-Enríquez, from the University of San Luis Potosí, Mexico, is now researcher at the UAB Department of Cell Biology, Physiology and Immunology. According to him, "although we generally metabolise the substance, pregnant women retain more fluids and the fetus could be affected by high concentration levels."

Original article: http://www.eurekalert.org/pub_releases/2011-09/uadb-bad092111.php