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. Author manuscript; available in PMC: 2010 Nov 2.
Published in final edited form as: Lab Chip. 2008 May 16;8(7):1042–1047. doi: 10.1039/b800604k

Figure 3.

Figure 3

A) The release of auto-fluorescent chemotherapeutic camptothecin was measured in PBS with a fluorescent spectrometer and reported as concentration in microgram per milliliter. The blank hydrogel represents the amount of camptothecin release for a non-drug loaded hydrogel in a microdevice. B) The permeation of camptothecin through a caco-2 epithelial monolayer on collagen treated Transwells®. The concentration in the bottom well of the Transwell® was normalized to that of the top well. An * indicates statistical significance with respect to the free drug conditions. A # represents significance with respect to drug filled hydrogels. All data is presented as average ± standard deviation.