Tanning lamps emit mostly UV radiation that is associated with signs of skin aging, such as wrinkling and sagging. In addition, which of the following skin cancers have been associated with tanning beds?
A. melanoma, basal cell, and squamous cell
B. only melanoma
C. squamous cell and basal cell
D. There is no increased risk of skin cancer associated with tanning beds.
Answer: A
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Which of the following is NOT a property of cytokines?
A. Induce apoptosis (programmed cell death) B. Induce cell motility C. Membrane-bound signaling molecule D. Soluble signaling molecule E. Upregulate transcription
Co-receptor molecules are required by TC and TH cells so that the TCR can stably bind to the MHC peptide presenting the antigen. Which co-receptor molecules are common to both TC and TH cells and their respective antigen presenting cells?
A. CD2/LFA-3 B. CD28/B7 C. CD45R/CD22 D. LFA-1/ICAM-1 E. All but B
A surgical incision into a nerve root is called _______________ .
Fill in the blank(s) with the appropriate word(s).
An appropriate modification for a student lacking coordination would be having him or her walk along a line on the floor as opposed to walking along a bench
Indicate whether the statement is true or false