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Your dislike of spiders has intensified recently, and now you are reluctant to go outdoors because you might see one. Describe how exposure therapy can help reduce your fear of spiders, and distinguish among in vivo exposure, imaginary exposure, and virtual exposure. Also discuss how cognitive and medical treatments might supplement exposure therapy.
Transcription Factors
Proteins that regulate gene expression by binding to specific DNA sequences, thereby controlling the transfer of genetic information from DNA to mRNA.
Steroids
A large class of organic compounds with a characteristic molecular structure containing four rings of carbon atoms; they include many hormones, alkaloids, and vitamins.
Intracellular Receptors
Proteins located inside the cell that bind to certain substances and initiate a specific cellular response.
First Messenger
A signaling molecule that binds to a receptor on the cell surface, initiating a signal transduction process that leads to the formation of an intracellular second messenger.
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