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Also note in F7 that the notifier included a Cell ID in the notification . Vitamin B1 , for instance , is associated with the metabolism of carbohydrates , fats , and proteins , while vitamin B12 is believed to facilitate red blood cell production in humans and other higher animals . While based in Lexington , we would see a tornado producing cell merger in the Nebraska panhandle on the third day . At the micron scale , we must understand the physics of adhesion of two cells , mediated by transient bonds.We studied the thermodynamic equilibrium of this system using a simple elastic model for the cell membrane in the following paper . Example 7 : Suppose that you are observing the behavior of cell duplication in a lab . The proposed study will determine the ideal hES-derived cells for PD therapy , thus leading to preclinical studies to transplant the selected cells into a monkey PD model we have established , and to bank and / or standardize the cell production in our Biomanufacturing Facility before clinical trials . Since the active role of the cell membrane in controlling the entry of substances is not modeled , textbooks should explain ( or involve the students in critiquing ) the usefulness and limitations of models . The paper , which was co-authored with Guenter Weiss , MD , of the Medical University of Innsbruck , grew in part from Goodnough 's research on how the inflammation that occurs during these chronic diseases contributes to anemia by interfering with the production of erythropoietin , the hormone that stimulates red blood cell production in the bone marrow . The gene codes for a relatively small protein believed to straddle the cell membrane in selected skin , hair follicle , sweat gland and other fetal and adult epithelial tissues . Membrane lipids have been implicated in the ubiquitin-dependent proteasome-mediated proteolysis induced by heat shock ( 20 ) , which indicates once more the importance of the cell membrane in the stress response ( see Section 4 ) . Megalencephaly is thought to be related to a disturbance in the regulation of cell production in the brain .