File:Positive feedback bistable switch.svg

Positive feedback is a mechanism by which an output is enhanced, such as protein levels. however, in order to avoid any fluctuation in the protein level, the mechanism is inhibited stochastically (I), therefore when the concentration of the activated protein (A) is past the threshold ([I]), the loop mechanism is activated and the concentration of A increases exponentially if d[A]=k [A]

[edit] Licensing:

I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide. If this is not legally possible: I grant any entity the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

This is a candidate to be copied to Wikimedia Commons. Freely licensed or public domain media are more accessible to other Wikimedia projects if placed on Commons. Any user may perform this move—please see Moving images to the Commons for more information. Please ensure that the file has a properly descriptive and unambiguous name before moving it to Commons. See here when to rename a file. If this image has been copied to Commons replace this tag with {{subst:ncd}} or {{subst:ncd|Image name on Commons.ext}} if a different filename is used on Commons. Copy to Commons: via CommonsHelper · via CommonsHelper 2 · via wmfLabs CommonsHelper

This file was flagged for transfer by a bot. Please thoroughly review the copyright status of this file and ensure that it is actually eligible for transfer to Commons. If you are concerned that this file could have problems with its attribution information and/or copyright status, then remove this notice and DO NOT transfer it to Commons. By transferring this file to Commons, you acknowledge you have read this message and are willing to accept all and any consequences for inappropriate transfers. Repeat violators will be blocked from editing.