In this electron micrograph, a human white blood cell is trapping bacterial cells. This type of cell defends the body against pathogens and other harmful particles by engulfing foreign objects and destroying them with the help of enzymes from the cell's lysosomes.
Stunning molecular biology illustrations look like floral abstract art
Molecular biology professor and artist David Goodsell has no trouble finding art in the human body. His hand-drawn watercolor illustrations explode with color while offering his visual interpretation of bacteria, viruses, and human cells.
MARC PHARES/SCIENCE PHOTO LIBRARY Caption: Two cytotoxic T-cells attack a single cancer cell. T-cells are lymphocytes originating in the thymus. They come in a variety of types and play a role in the immune system.
False-colored SEM image of a migrating mouse dendritic cell (5.2 µm), showing membrane projections known as lamellipodia (green). Dendritic cells are sentinels of the immune system that are posted in peripheral tissues, ingest intruders and then migrate to the lymphoid organs. There, they expose some of their digested protein fragments (antigens) using their cell membrane as a showcase, report on the intruder and interact with- and instruct effector immune cells known as T-lymphocytes…