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There are three main types of T cell. T helper (CD4+), T killer (CD8+) and T memory. The CD4+/8+ are complex proteins on the surface of each respective T cell that they use in their function. T helper cel...

By definition, dn/dt = - λ N ,
If you separate the variables which contain N and t, and then integrate w.r.t N and w.r.t t you get,
lnN = -λt + C (1),
...

The phospholipid bilayer is the main component of the plasma membrane. Phospolipids consist of two parts with different properties. One part is often referred to as 'head' or 'water-loving', which is hydr...

They are equations with variables that we have to find. They hold in the same time.

In order to achieve the highest marks possible in A Level Fine Art, you must continuously make sure that you are hitting all of the Assessment Objectives (AOs) at different stages along your path. This ca...