منابع مشابه
Dev124230 2268..2277
The niche directs key behaviors of its resident stem cells, and is thus crucial for tissue maintenance, repair and longevity. However, little is known about the genetic pathways that guide niche specification and development. The male germline stem cell niche in Drosophila houses two stem cell populations and is specified within the embryonic gonad, thus making it an excellent model for studyin...
متن کاملTetramethyl lead absorption: a report of human exposure to a high level of tetramethyl lead.
Accidental human exposure to a high level of tetramethyl lead is described. Tetramethyl lead is blended with petrol as an antiknock agent, and it has similar physical properties to tetraethyl lead. The patient had high levels of lead in urine, averaging 4-75 mumol (983 mug) daily for the first four days after exposure and he continued to have raised levels of urinary lead for six months. He had...
متن کاملPReS-FINAL-2277: Clubbing fingers in a boy with arthritis
Introduction Hypertrophic osteoarthropathy is a syndrome characterized by clubbing of the fingers and toes, periostosis of long bones, pain and swelling of the joints, and, in more advanced instances, pachydermia. The syndrome is often secondary to cardio-pulmonary or intestinal diseases.The primary form, known as pachydermoperiostosis, is a rare genetic disorder with autosomal dominant (with i...
متن کاملSurface Reactions of 3,3',5,5'-tetramethyl Benzidine on Hectorite
-The adsorption and oxidation of 3,3',5,5'-tetramethyl benzidine (TMB) on hectorite has been investigated using X-ray powder diffraction, ultraviolet-visible spectroscopy, electron spin resonance, and infrared spectroscopy. The molecule adsorbed by cation exchange at low adsorption levels and oxidized to the monomeric radical cation (yellow). At higher adsorption levels, intercalation of TMB oc...
متن کاملToxicity of tetramethyl lead solutions to mice and rabbits.
Tetramethyl lead (TML) has recently been adopted as an antiknock substance in gasoline. In some industries, tetramethyl lead has been substituted for tetraethyl lead (TEL) mixture or "ethylfluid". This recent development is the result of technical research which has shown that there is a more uniform octane distribution in all light and heavy fractions of gasoline in the combustion cylinders wi...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2009
ISSN: 1600-5368
DOI: 10.1107/s1600536808043912