473
The second part embodies an in - depth discussion on the role of the intestinal absorption models used to predict permeability , cellular uptake or even toxicity of nanoparticles , resulting into the design of nanocarriers with optimum efficacy for oral delivery .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None