Laa+ stimulated quiescent Swiss 3T3 and 3T6 ceils to enter the DNA-synthesizing S phase of the cell cycle. La 3+ and insulin interacted synergistically to increase DNA syn thes i s . A br ie f exposure of the cells to soluble LaCI~ optimally stimulated entry into S. La 3+ was s imi lar to A13+ in its mitogenic properties (3. Cell. Physiol. l l g , 298, 198#), but La ~+ was i0 times more potent ...

The ability of Gaussian noise to induce ordered states in dynamical systems is here presented in an overview of the main stochastic mechanisms able to generate spatial patterns. These mechanisms involve: (i) a deterministic local dynamics term, accounting for the local rate of variation of the field variable, (ii) a noise component (additive or multiplicative) accounting for the unavoidable env...

Localized ecological interactions can generate striking large-scale spatial patterns in ecosystems through spatial self-organization. Possible mechanisms include oscillating consumer-resource interactions, localized disturbance-recovery processes and scale-dependent feedback. Despite abundant theoretical literature, studies revealing spatial self-organization in real ecosystems are limited. Rec...

receptors, the ed (56). In 200 detected hete adenosine A1 the first demo with different the agonistdopamine D2 the same year The coimm tors has the dr tion using advances were cal methods b [bioluminesce and fluorescen became possi heterodimers FRET techniq mosaic could b after its demo (35, 52). Thes investigation o ous expansi approaches in combined BR complementa Interestingly, physical reso...

Transformations of optically active natural products such as arninoacids, hydroxy acids, carbohydrates etc, optical resolution of an intermediate or final products and chemical or biochemical synthesis are few of the methods to obtain enantiomerically pure compounds. Out of thes chemical or biochemical synthesis 3 is clearly attractive since it offers a great variation of solutions as well as c...

s issues when available, $25.00. Subscribers to The Physiologist also receive abstracts of the Conferences of thes of the Conferences of the American Physiological Society. The American Physiological Society assumes no responsibility for the statements and opinions advanced by contributors to The Physiologist. Deadline for submission of material for publication: Jan. 10, February issue; March 1...