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tag anatomy developmental biology

An illustration of flowers in the shape of the female reproductive tract
Uterus Transplants Hit the Clinic
Jef Akst | Aug 1, 2021 | 10+ min read
With human research trials resulting in dozens of successful deliveries in the US and abroad, doctors move toward offering the surgery clinically, while working to learn all they can about uterine and transplant biology from the still-rare procedure.
Rethinking Lymphatic Development
Amanda B. Keener | Aug 1, 2015 | 9 min read
Four studies identify alternative origins for cells of the developing lymphatic system, challenging the long-standing view that they all come from veins.
New beta cells without stem cells?
Kerry Grens | May 28, 2007 | 3 min read
Two studies find adult pancreatic cells maintain islet population, contradicting a hypothesis that regeneration relies on stem cells
How Cells Find Their Way
Laura Defrancesco | Sep 2, 2001 | 5 min read
Organisms need to sense their environment. By sensing, they can develop, heal wounds, protect against invaders, and create blood vessels. Chemotaxis, or directional sensing, allows cells to detect chemicals with exquisite sensitivity. Some chemotactic cells can sense chemical gradients that differ by only a few percent from a cell's front to its back. Although discovery of the molecule types involved in chemotaxis, as with other kinds of cell signaling events, has mounted, the details of how thi
Notable
Jeffrey Perkel | Jun 9, 2002 | 3 min read
Z. Mourelatos et al., "miRNPs: A novel class of ribonucleoproteins containing numerous microRNAs," Genes & Development, 16[6]:720-8, March 15, 2002. "A novel ribonucleoprotein (RNP) complex in HeLa cells was identified that contains two proteins implicated in spinal muscular atrophy (SMA), eIF2C2 (a member of the Argonaute family), and numerous small RNAs ~22 nucleotides in length. The finding that microRNAs (miRNAs) associate with eIF2C2 ties together genetic findings demonstrating that Argona
Longevity
Jill Adams(juadams@the-scientist.com) | May 8, 2005 | 7 min read
During autophagy-literally "self-eating"-cells deliver cytoplasmic constituents, including whole organelles, to the lysosome for degradation.
Scientists Strike a Cord
Rabiya Tuma | Feb 9, 2003 | 6 min read
Courtesy of SR Eng  BABY STAINS: The head of a transgenic murine embryo in which a marker enzyme has been specifically expressed in the sensory neurons of the trigeminal and dorsal root ganglia. The marker allows staining of the projections of these neurons into, among other areas, the hindbrain and spinal cord. (S.R. Eng et al., "Defects in sensory axon growth precede neuronal death in Brn3a-deficient mice," J Neurosci, 21:541-9, 2001.) Somewhere in the 200 million bases of the human ge
One Step Beyond: Going Beyond Genomics With Proteomics And Two-Dimensional Gel Technology
Laura Defrancesco | Jan 3, 1999 | 10+ min read
Proteomes and 2D Gel Apparatus Providers Big science has moved on to proteins. With the new brand of science termed proteomics--named by the Australians Marc Wilkins and Keith Williams to mean the "set of PROTEins encoded by the genOME"--the push is on around the globe to produce a complete description of a cell/tissue/organism in terms of the proteins produced. The challenge is all the greater because the expressed protein pattern changes with time and environment--responding to developmenta

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