Cells are the smallest unit of life. Cells in multicellular plants and animals are arranged into tissues, organs and organ systems. Cells. Tissues. Organs. Organ systems. And the organism itself.

An explanation of how cells make up tissues which in turn make up organs. The diversity of cells in the human body is mentioned. Using muscle cells as an example, it is then explained how cells ...

Cells can then be organized into tissues, which form organs, and organs can be grouped into organ systems, which are built into entire organisms—including humans like you. Organisms are units ...

During morphogenesis—the process by which living organisms take shape—cells collectively position themselves in specific ways ...

Researchers from the University of Technology Delft, the Netherlands Institute for Neuroscience and Caltech have developed a microscopy technique based on ultrasound to reveal capillaries and cells ...