The maturation stage of enamel development begins once the final tissue thickness has been laid down. Maturation includes an initial transitional pre-stage during which morphology and function of the enamel organ cells change. When this is complete, maturation proper begins. Fully functional maturation stage cells are concerned with final proteolytic degradation and removal of secretory matrix ...

background: third stage of labor has been defined as the most dangerous stage. due to the importance of the third stage, this study was performed in order to determine its length and related factors. materials and methods: this research is a cross sectional study which was carried out on 1000 deliveries in shabihkhani hospital (kashan-iran). inclusion criteria consist of gestational age of high...

In developing neurons the frequency of long duration, spontaneous, transient calcium (Ca2+) elevations localized to the growth cone, is inversely related to the rate of axon elongation and increases several fold when axons pause. Here we report that these spontaneous Ca2+ transients with slow kinetics, called Ca2+ waves, are modulated by conditions of ethanol exposure that alter axonal growth d...

background and objectives: nowadays herbicide reduction and different approaches leading to this goal like split application have been brought to attention. at split application, recommended or reduced doses divided in such a way which half of dose applied at one growth stage and the other half will use at next growth stage and finally all used doses are equal to recommended or any other reduce...