Assertion: percutaneous penetration | /r/HasProperty | brain et al.
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Source sentences:
text: An example of some of the experimental variables to be considered with in vitro dermal penetration studies are described in the report assessing the percutaneous penetration of diethanolamine in cosmetic formulations using in vitro human skin (Brain et al., 2005), including the testing of rinse off versus leave in formulation, varying the formulation ingredients, using replicate skin samples from different donors, and comparing permeability in fresh versus frozen skin tissues.