Cell line意思

"Cell line" is a term used in biology and biomedical research to refer to a population of cells that are derived from a single cell and have been cultured in the laboratory for an extended period of time. These cells are typically obtained from a tissue sample, such as a tumor, organ, or blood, and are then grown in a controlled environment, such as a cell culture.

Cell lines are used in a variety of research applications, including the study of cell biology, disease mechanisms, drug discovery, and the development of new therapies. They can be maintained and passaged (split and reseeded) for many years, allowing for the generation of large quantities of cells for experimentation.

One of the key characteristics of a cell line is that it is capable of continuous growth, which means that it can divide and proliferate indefinitely under the right conditions. This is in contrast to primary cells, which are cells that are isolated directly from a tissue and can only divide a limited number of times before they reach replicative senescence and stop growing.

Cell lines are an important tool in biomedical research, and many different types of cell lines are available, each with its own unique properties and uses. Some cell lines are derived from normal, healthy tissues, while others are derived from tumors or other diseased tissues. Some cell lines are capable of differentiating into different cell types, while others are maintained in an undifferentiated state.

Overall, the term "cell line" refers to a culture of cells that have been established in the laboratory and can be maintained and propagated for research purposes.