Search

...become high enough for nuclear fusion to be initiated in their cores. At this point, the clouds stop contracting further and are maintained in hydrostatic equilibrium with a balance between the inward force of gravity and the outward force due to their internal pressure. Stars are typically initially composed of about 75% hydrogen and 25% helium, with small traces of...

...become either further tyrosine phosphorylated (characterized by the enlarged bands in treated cells (bottom two arrows)) or newly phosphorylated (top three arrows), the effect mostly wearing off within an hour. SCF binds to a receptor tyrosine kinase called ‘c-Kit’, which is probably both directly and indirectly responsible for the phosphorylations seen here. (Data...

...become apparent when compared to a different model or categorisation or theory. I remember being quite startled when I was told that the Inuit of North America had many different words for snow. Here was a thing (one thing) in my conceptualisation of the world, which another group of people found helpful to divide into many different categories. As another example, there...

...becomes infected, and the immune system then reacts to destroy the virus and virus-infected cells. In the end, the immune system prevails and there is no longer any of the virus left in that host – this is referred to as sterile immunity. Usually, an acute infection will last for a few weeks, at most. However, some virus infections can evade the immune system and lie...