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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.


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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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June 7, 2012--------News Archive Return to: News Alerts




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Milk Ingredient Does a Waistline Good!

A natural ingredient found in milk protects against obesity

Just like people, mice enjoy diets that are high in fat. However, researchers, who liken the milk ingredient: nicotinamide riboside (NAD+) to a new kind of vitamin, observed that mice who were fed nicotinamide riboside along with a high fat diet, were not only protected from obesity - but became better at running as well.

A report of their findings appears in the June Cell Metabolism, a Cell Press publication.

"This [ingredient] is present in what we've all been eating since day one," says Johan Auwerx of École Polytechnique Fédérale de Lausanne.

The scientists identified the properties of nicotinamide riboside as they were searching for alternative ways to boost the well-known gene SIRT1. SIRT1 is known to benefit both metabolism and longevity. The researchers wanted to boost SIRT1- a red wine ingredient of resveratrol - for its' benefits to metabolism.

Auwerx's team suspected that a simpler way to boost SIRT1, would perhaps be through boosting levels of one of its' molecular sidekicks, the cofactor NAD+. This milk ingredient boosts SIRT1 in a rather appealing way. Not only is it a natural product, it also stays within the cell wall, as it does its magic.

Mice given nicotinamide riboside in fairly high doses along with their high-fat meals, burned more fat and were protected from obesity. They also become better runners, displaying muscles having greater endurance.

The benefits scientists observed in mice wouldn't be easy to get from drinking milk alone, Auwerx says. It may be more likely that the compound would serve as a new kind of metabolism-boosting supplement. Human tests are now needed.

Auwerx believes that NAD+ ultimately offers the same benefits attributed to resveratrol, just in a slightly different way.

Canto et al.: "The NAD+ precursor nicotinamide riboside enhances oxidative metabolism and protects against high-fat diet induced obesity."

Original article: http://www.eurekalert.org/pub_releases/2012-06/cp-mid060112.php