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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 SemestersFemale Reproductive SystemFertilizationThe Appearance of SomitesFirst TrimesterSecond TrimesterThird TrimesterFetal 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 HemispheresEnd of Embryonic PeriodEnd of Embryonic PeriodFirst Thin Layer of Skin AppearsThird TrimesterDevelopmental Timeline
Click weeks 0 - 40 and follow fetal growth
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November 25, 2011--------News Archive

Women at Low Risk Can Safely Choose Birth Style
Women with low risk pregnancies should be able to choose where they give birth, concludes The Birthplace in England national prospective cohort study.

Finger (Mal)formation Function of Desert DNA
Explaining the diversity of leg shapes in the animal kingdom and hereditary defects in finger formation.

Key Molecular Switch for Telomere Extension Found
For the first time, a key target for DNA damage is found that must be chemically modified to enable an enzyme thought to play a key role in cancer and aging.

New Role for Gene in Maintaining Steady Weight
Findings may help combat obesity and diabetes.

November 24, 2011--------News Archive

New Facts About Stuttering
Some forms of persistent stuttering are caused by mutations in a gene governing the recycling of old cell parts - not speech.

Preventing Preemie Brain Injury
New advances could eventually help reduce the number of premature babies who develop cerebral palsy, epilepsy or behavioral disorders such as ADHD.

Short Stature May Be Due To a 'Shortage' of Genes
Research suggests that uncommon genetic deletions are associated with short stature.

November 23, 2011--------News Archive

Intestinal Disorder, Preemies and AB Blood Type
Preemies with the AB blood type who develop NEC are nearly three times as likely to die from it as preemies with other blood types.

Babies Fed Fish Before 9 Months Wheeze Less
But pre-natal pain and fever antibiotics taken by mom in pregnancy, or by the baby in the first-week of life, increase risk of "pre-school wheeze."

Physical Activity Improves Quality Of Sleep
People sleep significantly better and feel more alert during the day if they get at least 150 minutes of exercise a week, a new study concludes.

November 22, 2011--------News Archive

Critical Molecules For Hearing/Balance Discovered
Gene-therapy trial will attempt to restore hearing in deaf mice.

Tweaking One Gene Makes Muscles Twice As Strong
Salk scientists and their collaborators find new avenue for treating muscle degeneration in people who can't exercise.

Fruit Fly Intestine Holds Secret to Fountain of Youth
Long-lived fruit flies offer Salk scientists clues to slowing human aging and fighting disease.

November 21, 2011--------News Archive

Nerve Cells Key to making Sense of All of Our Senses
Scientists have unraveled how the brain manages to process complex, rapidly changing, and often conflicting sensory signals and make sense of our world.

Discovery of A New Muscle Repair Gene
Thanks to next-generation DNA sequencing, an international team of scientists have discovered more about the function of muscle stem cells.

Immune System Governs Stem Cell Regeneration
Controlling a stem cell transplant recipient’s immune response may be major key to successful bone regeneration.

WHO Child Growth Charts

A new study in Nature Medicine describes how different types of immune system T-cells alternately discourage and encourage stem cells to regrow bone and tissue, bringing into sharp focus the importance of the transplant recipient's immune system in stem cell regeneration.

The study, conducted at the Center for Craniofacial Molecular Biology at the Ostrow School of Dentistry of USC, examined how mice with genetic bone defects responded to infusions of bone marrow mesenchymal stem cells, or BMMSC.

Under normal conditions, the mice's T-cells produced an inflammatory response and triggered the creation of cellular proteins interferon (INF)-gamma and tumor necrosis factor (TNF)-alpha. These attacked and killed the stem cells, preventing the production of new bone.

"Normally, T-cells protect us from infection," said Professor Songtao Shi, corresponding author for the study, "but they can block healthy regeneration from happening."

However, when the mice were given infusions of regulatory T-cells, or Treg, the levels of the interfering INF-gamma and TNF-alpha decreased, increasing the rate of bone growth and defect repair. Furthermore, administering the anti-inflammatory drug aspirin at the site of the bone defect also increased the rate at which the BMMSCs were able to regrow bone.

Postdoctoral Research Associate and lead author Yi Liu said the findings illustrate the previously unrecognized role of T-cells in tissue regeneration. They also highlight the need for scientists exploring the possibilities of stem cell regeneration to shift their focus to the immune system, she added.

"Based on what we've found, this should be the direction of more research in the future," Liu said.

Yi Liu, Lei Wang, Takashi Kikuiri, Kentaro Akiyama, Chider Chen, Xingtian Xu, Ruili Yang, WanJun Chen, Songlin Wang, and Songtao Shi. (in press) Mesenchymal stem cell–based tissue regeneration is governed by recipient T lymphocytes via IFN-γ and TNF-α. Nature Medicine doi: 10.1038/nm.2542

Original article: http://www.eurekalert.org/pub_releases/2011-11/uosc-ris111711.php