Cellular Barriers: The Paracellular Pathway; M. Cereijido, et al. Ectopeptidases; N.M. Hooper. Epithelial Barriers: Macromolecular Transport Across the Intestinal Epithelium; M. Neutra, J.P. Kraehenbuhl. Oral Cavity; H.P. Merkle, G. Wolany. Vascular Barriers: Vascular Endothelial Barrier Function and its Regulation; A.B. Malik, A. Siflinger-Birnboim. Transcytosis of Macromolecules through the FluidBrain Barriers In Vivo; R.D. Broadwell. Elimination Barriers: Renal Uptake and Disposal of Proteins and Peptides; R. Rabkin, D.C. Dahl. The Immune System as a Barrier to Delivery of Protein Therapeutics; M.W. Konrad. Tissue Barriers: Extravasation and Interstitial Transport in Tumors; R.K. Jain, L.T. Baxter. Diffusion, Bulk Flow, and Volume Transmission of Proteins and Peptides within the Brain; C.E. Johanson. 6 additional articles. Index.