The signal transduction pathway is the mechanism by which the energy of a photon signals a mechanism in the cell that leads to its electrical polarization. 1  This polarization ultimately leads to either the transmittance or inhibition of a neural signal that will be fed to the brain via the optic nerve.
The Inland Empire (I.E.) is a metropolitan area and region of Southern California. It is situated directly east of the Los Angeles metropolitan area.
The California dogface butterfly or dog head (Zerene eurydice) was designated the official State Insect in 1972. The butterfly is found only in California from the foothills of the Sierra Nevada to the Coast Ranges and from Sonoma south to San Diego.s one might expect, gold is the official state mineral and was so designated in 1965. In the four years following the discovery of gold by James Marshall in January of 1848, California's population swelled from 14,000 to 250,000 people.