The white blood cells then produce antibodies to match the shape of the antigens. The antigens on the surface of pathogenic cells are different from those on the surface of your own cells. This enables your immune system to distinguish pathogens from cells that are part of your body.he white blood cells then produce antibodies to match the shape of the antigens. The antigens on the surface of pathogenic cells are different from those on the surface of your own cells. This enables your immune system to distinguish pathogens from cells that are part of your body.
The first view is a good way to start thinking about logarithms: logarithms are exponents. That's the view introduced in this section. Another view is that logarithmic functions âundoâ exponential functions, or (more briefly) logs âundoâ exponents. and is the subject of more advanced lessons.
The logarithm of x to base b, denoted log b (x) (or log b x when no confusion is possible), is the unique real number y such that b y = x. For example, log 2 64 = 6, as 64 = 2 6. The logarithm to base 10 (that is b = 10) is called the common logarithm and has many applications in science and engineering. The natural logarithm has the number e (â 2.718) as its base; its use is widespread in mathematics and physics, because of its simpler derivative.