Molecular biology is the study of biology at the molecular level. It involves the study of DNA, RNA, proteins and other molecules that affect cellular processes. The field overlaps with other areas of biology and chemistry, particularly genetics and biochemistry.
The field of cell biology investigates multiple aspects of cells including their physiological properties, structure, and the organelles they contain. Cell biology also includes the study of a cell's interactions with its environment, its life cycle, division and death. Molecular and cellular biology are related, as most of the properties and functions of a cell can be described at the molecular level.
The two areas of study encompass many different sub-fields including microbiology, genetics and developmental biology. Alfa Aesar provides a wide range of high quality reagents for cellular and molecular biology, especially for the study of apoptosis and signal transduction.