Search results
Results from the WOW.Com Content Network
A global project to describe all cell types in the human body and their functions. Learn about the goals, funding, data and progress of the initiative, as well as related projects and references.
Learn about the various specialized cells found within the human body, their functions, characteristics, and classification. The web page provides an enumeration and description of 411 different types of human cells, but also notes the challenges and limitations of estimating the total number of cell types.
Learn about the three main types of blood cells: red, white and platelets, and their roles in the blood and immune system. Find out where blood cells are formed and how they are counted in a complete blood count test.
Learn about the human body, the entire structure of a human being composed of cells, tissues, organs and systems. Explore the elements, genome, tissues, organs and functions of the body, as well as its variations and interactions.
Learn about the elements, molecules, and cells that make up the human body. The average human body contains about 7 × 1027 atoms and at least 60 chemical elements, with oxygen, carbon, hydrogen, and nitrogen being the most abundant.
The human cerebellum contains on the order of 60 to 80 billion granule cells, making this single cell type by far the most numerous neuron in the brain (roughly 70% of all neurons in the brain and spinal cord, combined). Golgi cells provide inhibitory feedback to granule cells, forming a synapse with them and projecting an axon into the ...
The Hayflick limit is the number of times a normal human cell can divide before stopping due to telomere shortening. Learn about the history, experiment and discovery of this phenomenon by Leonard Hayflick, and how it relates to cellular senescence and aging.
Cell division is the process by which a parent cell divides into two daughter cells, either genetically identical (mitosis) or with reduced chromosomes (meiosis). Learn about the different forms of cell division in prokaryotes and eukaryotes, and the stages of the cell cycle and DNA replication.