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  Stem Cells Stem cells are cells with the potential to develop into many different types of cells in the body, such as brain cells, blood cells, and muscle cells, and serve as a repair system for the body. They are the body's raw materials; cells from which all other cells with specialized functions are generated. Stem cells replace specialized cells that are damaged or lost. Moreover, they can divide over and over again to produce new cells. They are defined as precursor cells that have the capacity to self-renew and to generate multiple mature cell types. Stem cells are a unique and powerful tool for research and medical treatments. These cells help understand human biology as well as develop new strategies for therapy. By creating induced pluripotent stem cells (iPSCs) from the patient’s blood or bone marrow, researchers can study the characteristics of disease. They can also be used to test potential drugs. Moreover, they may help restore some functions, such as the heart...

  Cell growth and expansion is a simple process to understand, but complex in biological systems. Basically, plant growth and development take place at the molecular level: C ell E xpansion , also known as mitosis, involves the separation and duplication of entire sets of cells. Cells may divide into two types: a proton cell that generate the chemical energy ATP; a carbon-based cell that produce carbon dioxide; and an oxygen-based cell that produce oxygen. Because oxygen cell numbers increase with increasing levels of carbon dioxide in the surrounding air, photosynthesis, the process through which plants obtain food through the photosynthesis of food matter taken from the environment, is completed via an exchange of electrons between the plants' chloroplasts (the specific cell responsible for making energy) and the carbon compounds that comprise the exogenous carbon compounds. A.k.a., Photosynthesis. When cells multiply uncontrollably, the result is often an autoimmune reaction: t...