Abscesses occur when an area of tissue becomes infected and the body's immune system tries to fight it. White blood cells move through the walls of the blood vessels into the area of the infection and collect within the damaged tissue. During this process, pus forms.
cognition cogÂ·niÂ·tion (kÅg-nÄ­sh'Én) n. The mental faculty of knowing, which includes perceiving, recognizing, conceiving, judging, reasoning, and imagining.
Knowledge is a familiarity, awareness or understanding of someone or something, such as facts, information, descriptions, or skills, which is acquired through experience or education by perceiving, discovering, or learning.Knowledge can refer to a theoretical or practical understanding of a subject.ithout this idea of a theory of knowledge, it is hard to imagine what philosophy could have been in the age of modern science. The definition of knowledge is a matter of ongoing debate among philosophers in the field of epistemology.