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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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December 30, 2011--------News Archive

Success in Making The Spinal Cord Transparent
Stimulating damaged nerve cells to regenerate has been the goal of medicine. Now it is possible to trace nerve paths in a transparent spinal cord section.

Brain Glial Cells Are Much More Than Glue
Glia cells also regulate learning and memory, new research finds.

Stress Can Slow Skin Cancer, At Least Sometimes
Chronic stress is an affliction mostly limited to modern man. However, acute stress is an important response to dangerous situations and can speed recovery.

December 29, 2011--------News Archive

FDA Warning On Change to Infant Acetaminophen
Recent dosing changes to liquid infant acetaminophen, has the FDA urging parents to read the labels. The new form of the popular pain reliever is less concentrated.

Detox Your Diet!
Harvard School of Public Health wants us all to eat food without chemicals as much as possible to avoid changing our own and our kids' body chemistry.

Discovery of Brain Cell Malfunction in Schizophrenia
Schizophrenic brains reveal less flexibility in some histones (the spools that wind DNA) blocking gene function. The problem is more pronounced in young sufferers.

December 28, 2011--------News Archive

When "A Rose by Any Other Name" Is Not
Children and adults do not classify information in the same way.

Childhood Hypersensitivity Linked to OCD
Adult onset of Obsessive Compulsive Disorder could be connected to oral and tactile sensitivities seen in childhood.

Gene Critical for Development Linked to Arrhythmia
Altering the function of a gene called Tbx3 interferes with the development of the cardiac conduction system causing potentially lethal arrhythmias of the heartbeat.

December 27, 2011--------News Archive

Reversing Autoimmune Disease in Mice
A team of scientists has turned the tables on an autoimmune disease.

An Altered Gene Tracks RNA As It Edits Neurons
Biologists use technology to observe individual differences in fruit flies

Mother-Toddler Relationship Linked to Teen Obesity
The quality of the emotional relationship between a mother and her young child could affect the potential for that child to be obese during adolescence.

December 26, 2011--------News Archive

Severe Congenital Disorder Reversed in a Mouse
Adding a sugar to water during pregnancy protects embryos from defects.

lincRNAs Pivotal In Brain Development
Long intervening non-coding RNAs (lincRNAs) play key roles during brain development in zebrafish. Now human versions are substituting for the zebrafish.

Balancing the Womb
New research hopes to explain premature births and failed inductions of labor.

WHO Child Growth Charts

What Is Your BMI?


Normal skin cells.

Firdaus Dhabhar has evidence that stress can slow skin cancer. But it’s not so simple. He also has evidence that stress can hasten cancer.

You see, there’s stress and then there’s stress.

First, Dhabhar, associate professor of psychiatry and behavioral sciences, investigated the bad stress: chronic stress that goes on for weeks and months. This kind of stress reduces the immune system’s ability to fight diseases, including skin cancer, according to his mouse studies.

But the idea that all stress is bad didn’t add up for Dhabhar, who looks to nature for clues about health. Unlike chronic stress, an affliction mostly limited to modern man, acute stress is an important response to dangerous situations, the fight-or-flight rush felt when you’re chased by a tiger or, more realistically, in a near accident on the freeway. Acute stress sends immune cells coursing through your blood and on to their battle stations, ready for action if you are hurt. What’s more, Dhabhar had previously shown in humans that an adaptive, acute-stress response during surgery can speed recovery.

It’s reasonable, then, that acute stress might affect cancer differently, and could even help fight it. “Often, biology defeats pathology and we don’t even realize it,” says Dhabhar.

So he and his team studied how the immune-boosting effects of acute stress affected skin cancer. The researchers exposed hairless mice to about 10 minutes of UV-B light three times a week — each treatment akin to staying out a bit too long in the sun. For a short-term stress that mimicked the natural danger of a collapsed burrow, half the mice were placed in small, ventilated plastic tubes that restricted their movement for a couple hours before some UV sessions.

After 10 weeks, the restrained rodents developed fewer tumors than the unstressed mice. The protection came from ramped-up defensive immune genes, and more immune cells invading the tumors of the stressed group.

While short-term stress helped, its protective effects didn’t last forever. After 22 weeks, nearly all animals had tumors, although the short-term stress group had fewer and smaller tumors until week 26, when the tumor burden evened between the two groups. Dhabhar’s lab is now investigating whether an acute-stress immune boost at later stages of tumor development is also protective.

If visions of oncologists prescribing public speeches and bungee jumping are floating through your head, you may want to know that Dhabhar hopes to find ways to behaviorally (think virtual reality or brief exercise) and pharmacologically mimic the good effects of acute stress.

Other research from Dhabhar’s group has shown that stress hormones mediate the protective redistribution of immune cells to the skin. Now, he is teasing apart the molecular and cellular mechanisms of that redeployment. Those details could inform the amount, timing and location of hormones needed to mimic the acute-stress response in patients so doctors can best exploit nature’s immune-boosting system.

Dhabhar’s lab has also shown that chronic stress can suppress the beneficial acute-stress response.

“Therefore, the key is to keep chronic stress levels low so the protective acute-stress response can spring into action when needed,” he says.

So forgo your anxiety about that demanding boss or those bills. Save it for when the tiger comes to bite.

Original article: http://stanmed.stanford.edu/2011fall/article8.html