How parasites affect humans is not a science topic. However, the medical community does know that some parasites are capable of causing illness. When we speak about the human body, we refer to it as the "social organism". The word "organism" is not used to describe humans. "Human" and "organism" are different words. It is interesting to note that most of the parasites and parasites that are known to cause illness in humans are considered parasites. In order to understand the process of how parasites affect humans, we need to go back a bit. The body is made of many cells, each of which is made of a certain kind of proteins. These proteins, or polypeptides, play an important role in the development and function of the cell. These proteins are found in different places in the body, but are usually grouped in groups called proteins. There are two types of proteins, called α and β (see picture of the human body). The structure of an α and β protein can be illustrated as shown in the figure below. The left side of the figure shows the structure of a protein. In the upper part is the active site of the protein. Here, the protein is surrounded by a peptide.