Thousands of Americans suffer from the delay or non-appearance of puberty. While the underlying cause is failure in the correct action of the hypothalamic hormone GnRH, the precise genetic causes have not been fully understood.
Feb 3, 2020
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More than 20 years ago, the lab of developmental biologist Olivier Pourquié discovered a sort of cellular clock in chicken embryos where each "tick" stimulates the formation of a structure called a somite that ultimately ...
Jan 8, 2020
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For the first time, researchers describe the genetic program behind primordial lung progenitors—embryonic cells that give rise to all the cells that form the lining of the respiratory system after birth. They believe this ...
Jan 31, 2020
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An aggressive type of pediatric brain tumor, medulloblastoma, exists in a pre-malignant form at birth after initially developing during the first or second trimester of pregnancy, according to a new international study. As ...
Sep 21, 2022
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The evolution of adaptations for life on land have long puzzled biologists – are feathers descendents of dinosaur scales, how did arms and legs evolve from fins, and from what ancient fish organ did the lung evolve?
Jul 21, 2013
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A recent study published in the Journal of Environmental Sciences (JES) shows that embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants efficiently and cost-effectively.
Aug 10, 2015
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Men born in November, December or January are more likely of being left-handed than during the rest of the year. While the genetic bases of handedness are still under debate, scientists at the Faculty of Psychology, University ...
Jul 3, 2014
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Two research teams at Karolinska Institutet have identified the dopamine-producing cells in the midbrain of mice and humans. They have also developed a method of assessing the quality of in-vitro cultured dopamine-producing ...
Oct 10, 2016
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Whitehead Institute scientists have identified conserved, long intervening non-coding RNAs (lincRNAs) that play key roles during embryonic brain development in zebrafish. They also show that the human versions of the lincRNAs ...
Dec 22, 2011
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Smoking by mothers during the period immediately before and after conception is linked to a delay in embryonic development, smaller fetuses at the time of the 20-week ultrasound scan, and lower birth weight.
Feb 23, 2022
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