منابع مشابه
Maya blue: a clay-organic pigment?
Maya Blue, a pigment used by the Mayas in Yucatan, is remarkably stable: the color is not destroyed by hot concentrated mineral acids or by heating to about 250 degrees C. The principal constituent is the colorless mineral attapulgite. It is proposed that the pigment is an adsorption complex of attapulgite and natural indigo; a synthetic equivalent may be prepared from attapulgite and either in...
متن کاملM Current Mystery Messenger Revealed?
The identity of signaling elements that couple muscarinic acetylcholine receptor (mAChR) activation to M current (KCNQ K(+) channels) modulation has remained unknown despite decades of study. Suh and Hille (in this issue of Neuron) demonstrate that activation of phospholipase C (PLC) initiates M current modulation and that recovery requires ATP and phosphoinositide 4-kinase (PI 4-K). These data...
متن کاملA case of long-lasting misdiagnosed lymphangioma circumscriptum masquerading as dermatitis
Lymphangioma circumscriptum is a rare benign lymphatic malformation, clinically characterized by clusters of translucent vesicles. Uncommon manifestations such as verruciform or zosteriform have also been reported in the literature, yet eczematous-like presentation is extremely rare. The present study describes the case of a young woman with a 16-year history of an exudative eczematous-like pla...
متن کاملA different form of long-lasting potentiation revealed in tissue plasminogen activator mutant mice.
The establishment of hippocampal long-term (LTP) requires protein and mRNA synthesis, suggesting that neuronal activity resulting in LTP initiates a cascade of gene expression. The expression of the gene for the extracellular serine protease tissue plasminogen activator (t-PA) is induced during LTP. Here we analyze long-lasting LTP (L-LTP,>4 hr)in CA1 hippocampal slices of mice homozygous for d...
متن کاملA long-lasting verrucous plaque on the hand revealed as tuberculosis cutis.
Sir, Histopathology showed marked hyperkeratosis and acanthopapillomatosis. A dense lymphocytic in® ltrate surTuberculosis verrucosa cutis (TVC) is a rare form of cutaneous tuberculosis due to inoculation of mycobacterium tuberculosis rounded small aggregatesof histiocytes and few multinucleated Langhan’s type cells. There was no caseation necrosis. The (MT) into the skin of a subject with rela...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2005
ISSN: 0108-7673
DOI: 10.1107/s0108767305096765