Answer:
The fact that the information is not provided or endorsed by a medical professional is an indication that the information is unreliable.
Explanation:
Information provided by the lay community or sponsors of the treatment is, in general, not reliable. It is unwise to follow advice and information contained in testimonials because these people do not have the necessary medical knowledge and usual research or laboratory testing data to support treatment or drug in question.
Explanation:
Types of training and training methods need to be understood well in order to select and design the appropriate training program for an athlete. Training is what athletes do in order to improve their performance. However, training gains are also specific to the training. Training benefits are specific to the speed of movement, muscles used, types of contractions, intensity and duration of the training. So it depends on the sport.
Epithelial tissues undergo turn-over throughout adult life: cells die and are replaced. Consequently,most if not all epithelia contain stem cells that
<span>(i) are competent for cell division, </span>
<span>(ii) self renew:regeneration of a "mother" stem cell with each division, and </span>
(iii) produce differentiated cell types specific to each epithelia.
-Stem cells produce differentiated cell types by cell division coupled with specific pathways of cell specification imposed on some of their daughter cells. In most stem cell-tissue systems, cell division and specification goes through several steps. Many stem cells produce daughters that also proliferate themselves (undergo cell division cycles), often at faster rates; these transitional intermediates are called transit amplifying cells. These transit amplifying cells then produce differentiated cells, either directly or through several steps of specification. At each step,specific changes in protein expression patterns and activities occur.
-Stem cell in gland crypt bottom (tightly control stem cell, have to divide longutdinal)
<span>-Stem cell in skin basal lamina (divide in apical direction (change in phenotype) form squamous layer at apical, highly control (reactivate/reuse), secrete ligand that core signaling molecule (WINKS) in early develop than reuse and reactivate for stem cell in skin... also use in cancer cell (lost of control=tumor))</span>
