Which of the following is incorrect regarding sphingosine 1-phosphate (S1P) and its receptor?
a. It is a lipid that has chemotactic activity.
b. S1P gradients are established in lymph nodes with lowest concentrations in T-cell areas.
c. CD69 upregulates S1P receptor expression on the surface of naive T cells.
d. S1P is synthesized by all cells.
C
You might also like to view...
A medical term that means pertaining to the eardrum (tympanic membrane) is ________.
Fill in the blank(s) with the appropriate word(s).
To his surprise, Andy is prescribed a phosphodiesterase (PDE) inhibitor to treat his benign prostatic hyperplasia, which he knows to also be used to treat erectile dysfunction. What PDE inhibitor has been approved for this use?
A) febuxostat B) tadalafil C) darifenacin D) probenecid
Quantitative analysis relies on visual evaluation of the performer's movement.
Answer the following statement true (T) or false (F)
The ____________________ is located at each end of a long bone
Fill in the blank(s) with correct word