Neurons are nerve cells, making up the functional core of the peripheral and central nervous systems. The function of neurons is to carry electrical signals, where they carry them to and from depends on the location of the neuron in…
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The Hayflick limit proposes that somatic cells, the cells of the body, cannot divide indefinitely. The Hayflick limit remains a foundation in the theory of natural cancer defenses, as well as studies of aging. In the case of cancer theory,…
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Phagocytic cells are just one of the many components contributing to the inner workings of the human body. Phagocytes are the white blood cells; they absorb harmful poisons in the form of bacteria and dying or dead cells from within…
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A major step in the evolution of life forms was the progression from single-celled to multi-celled organisms, which is estimated to have occurred approximately 2 billion years ago. One organism that straddles this line is blue-green algae, or cyanobacteria. Cyanobacteria…
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Toll-like receptors (TLRs) are single, membrane spanning, protein receptors which play a valuable role in the innate immunity of a person. It initiates the recognition of certain molecular patters derived from microbial cells invading the human body and signals the…
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Every organism is made of cells, and every cell contains organelles. These are the “little organs” that control the life functions of that cell. Mitochondria are organelles that are vitally important to the functioning of a cell, and therefore to…
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The cells in the skin that produce melanin are called melanocytes, which literally mean “melanin cells”. Melanin is one mechanism that protects the body from the harmful effects of sunlight. Exposure to sunlight triggers the melanocytes which produce melanin, darkening…
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All living things have cells which have a diameter of about 10 µm. They comprise of different structures called organelles which perform specific functions within the cell. Cell Membrane Also known as the plasma membrane or the plasmalema. It encloses…
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Mitosis is a process in biology where eukaryotic cells and their nuclei divide to produce two cells, identical to the first. There are a few steps in this process. Mitosis is an important part of biology and is the way…
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Molecular imaging is a science which gathered pace from early 21st century because of the burning need to evaluate molecular processes and cellular biology in living organisms and cellular structures without altering their physiological or biological structure. In this imaging…
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