neurokinin 1
NSFW Tumblr
find neurokinin 1 on porn pin board
neurokinin 1 clips
neurokinin 1 videos
neurosciencestuff: (Image caption: After treatment with the DAMGO, an endogenous mu-opiod receptor is internalized in endosomes (above, left) and after DAMGO washout is recycled back to the cell surface (above, right))Researchers Discover How Pain
