The main types of immune cells are white blood cells. There are two types of white blood cells â lymphocytes and phagocytes. When weâre stressed, the immune systemâs ability to fight off antigens is reduced.That is why we are more susceptible to infections.here are two types of lymphocytes : B cells-produce antibodies which are released into the fluid surrounding the bodyâs cells to destroy the invading viruses and bacteria. T cells (see picture opposite) - if the invader gets inside a cell, these (T cells) lock on to the infected cell, multiply and destroy it.
Editor's Description: Introduction to Art: Design, Context, and Meaning offers a comprehensive introduction to the world of Art. Authored by four USG faculty members with advance degrees in the arts, this textbooks offers up-to-date original scholarship.
VOCABULARY ELEMENTS OF ART: The visual components of color, form, line,shape, space, texture, and value. Line An element of art defined by a point moving in space. Linemay be two-or three-dimensional, descriptive, implied, orabstract. Shape An element of art that is two-dimensional, flat, or limited toheight and width. Form An element of art that is three-dimensional and enclosesvolume; includes height, width AND depth (as in a cube, asphere, a pyramid, or a cylinder). Form may also be freeflowing. Value The lightness or darkness of tones or colors. White is thelightest value; black is the darkest.