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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 2, 2011--------News Archive

'Gene Overdose' Causes Extreme Thinness
Scientists have discovered a genetic cause of extreme thinness for the first time.

Genetics Meets Metabolomics
A closer look at each individual's metabolites might lead to a better estimation for that individual's risk for developing complex common diseases.

September 1, 2011--------News Archive

Parents’ Stress Leaves Marks on Children’s Genes
Epigenetics changes the expression of genes, and can induce long lasting changes in our children when they are exposed our to stress.

Gene Defect Linked to Disfiguring Disorder
The faulty gene responsible for Proteus syndrome, a rare disorder of uncontrolled growth of certain body tissues and organs, has been identified

August 31, 2011--------News Archive

Mom's Morning Sickness May Affect Infant Brain
Extreme morning sickness could lead to lifelong emotional, behavioral disorders in kids.

Stanford Invents Sutureless Joining of Blood Vessels
Sutures are difficult to use on blood vessels less than 1 mm wide. Now, Stanford University has a glue which works on extremely slim blood vessels 0.2 mm wide.

August 30, 2011--------News Archive

Mouse Model Brings New Ideas on Lafora Disease
Researchers at IRB Barcelona have demonstrated a link between abnormal sugar accumulation and the neuronal degeneration characteristic of Lafora disease.

Bilingual Babies' Display Early Brain Differentiation
Babies and children are whizzes at learning a second language, but that ability begins to fade as early as their first birthday.

August 29, 2011--------News Archive

Non Coding RNAs Direct Embryonic Development
Embryonic stem cells can either differentiate into cells of a specific lineage such as blood cells or neurons, or they can stay in a pluripotent state. Depending on RNAs.

Degrading One Protein Allows Cell to Divide
Found, a crucial element controlling segregation of genetic material from parent to daughter cells. Regulating CenH3 protein ensures correct cell division in Drosophila.

Going With the Flow
The egg develops through two asymmetric divisions, separating into daughter cells. However, microtubules don't pull apart the centromeres, just with the flow of actin.

A Light Answer to the Heavy Question of Cell Growth
A technique offers insight into the much-debated problem of whether cells grow at a constant rate or exponentially.

WHO Child Growth Charts


Morning nausea while pregnant can be extremely dibilitating to you and may also be detrimental to your baby.

An extreme form of pregnancy-related nausea and vomiting known as hyperemesis gravidarum (HG) takes a heavy toll on thousands of women each year and can lead to hospitalization and pregnancy termination. But new research suggests pregnant women are not the only victims.

A joint study by UCLA and the University of Southern California has found that children whose mothers suffered from HG while carrying them were 3.6 times more likely to suffer from anxiety, bipolar disorder and depression in adulthood than individuals whose mothers did not have the condition. HG sends some 285,000 women to the hospital in the U.S. each year.

The study is published in the August 2011 issue of the Journal of Developmental Origins of Health and Disease.

Prior studies have found that children of women who experience nausea persisting beyond the first trimester of pregnancy have more attention and learning problems by age 12, said study co-author Marlena Fejzo, an assistant professor of hematology–oncology at the David Geffen School of Medicine at UCLA and an assistant professor of maternal and fetal medicine at the Keck School of Medicine of USC. Additional studies have found that poor fetal nutrition, a frequent result of HG, can lead to poor health in adulthood.

"Even though hyperemesis gravidarum can be a form of starvation and dehydration in pregnancy, no studies prior to this have been done to determine the long-term effects it has on the exposed unborn child," Fejzo said.

HG often runs in families and in previous research, Fejzo and her colleagues found that women with a family history of the condition were up to 17 times more likely to suffer from it themselves.

The findings from the current study were based on surveys of women with HG who reported on the emotional and behavioral histories of their siblings. Of the 150 respondents, 55 had mothers who also suffered from the condition, so their siblings were exposed to HG in utero; 95 had mothers who didn't experience HG, and thus their siblings were not exposed. There was a total of 87 siblings from the exposed group (the "cases") and 172 from the non-exposed group (the "controls").

The research findings include:
HG Exposed Non-Exposed
16% depression 3% depression
8% bipolar disorder 2% bipolar disorder
7% anxiety 2% anxiety

"In all, among 17 diagnoses, 38 percent of the cases [those from the exposed group] are reported to have a psychological and/or behavioral disorder, as compared to 15 percent of controls," the researchers write. "In this study, adults exposed to HG in utero are significantly more likely to have a psychological and/or behavioral disorder than non-exposed adults."

These higher rates could stem from the mothers' prolonged malnutrition and dehydration during fetal brain development. And the anxiety and stress that are common during and after HG pregnancies may also play a part, the researchers said.

The researchers noted that the study has limitations. For instance, it was based on recall and self-reporting, which can lead to biased or incomplete responses, so the rates of diagnoses within each group should be treated with caution, they said.

Still, the very significant differences reported suggest that adults who were exposed to HG in utero could be at a nearly fourfold higher risk for lifelong neurobehavioral disorders in adulthood.

"HG is an understudied and undertreated condition of pregnancy that can result in not only short-term maternal physical and mental health problems but also potentially lifelong consequences to the exposed fetus," the researchers concluded.

The Intramural Research Program of the National Institute of Child Health and Human Development funded this study.

Additional study co-authors were Andrew Bray and Frederic Schoenberg of UCLA; Patrick Mullin and T. Murphy Goodwin of USC; Kimber W. MacGibbon of the Hyperemesis Education and Research Foundation; and Roberto Romero of the Department of Health and Human Services.

Please contact Fejzo at nvpstudy@usc.edu to participate in the HG research.

The David Geffen School of Medicine at UCLA ranks among the nation's elite medical schools, producing doctors and researchers whose contributions have led to major breakthroughs in health care.