MAPK/ERK pathway. The MAPK/ERK pathway (also known as the Ras-Raf-MEK-ERK pathway) is a chain of proteins in the cell that communicates a signal from a receptor on the surface of the cell to the DNA in the nucleus of the cell.
Acclimatization or acclimatisation (also called acclimation or acclimatation) is the process in which an individual organism adjusts to a change in its environment (such as a change in altitude, temperature, humidity, photoperiod, or pH), allowing it to maintain performance across a range of environmental conditions.
collimate - adjust the line of sight of (an optical instrument) optics - the branch of physics that studies the physical properties of light align, aline, adjust, line up - place in a line or arrange so as to be parallel or straight; align the car with the curb; align the sheets of paper on the table