Hello David, I have been researching the Blood Brain Barrier extensively and found a synopsis that is quite clear online. It is published by UT Health, McGovern Medical School. It has an entry that says it is "an open access educational resource provided by the department of neurobiology and anatomy." It is a study program that looks free to the public. Here is a statement for who it is intended for: The material in this offering is designed for first-year medical students, but would also be appropriate for graduate students as well as advanced undergraduates. It has also been optimized to be accessible to individuals with various backgrounds in the neurosciences and different learning styles. Ideally, readers should have had college-level courses in physics, chemistry and biochemistry, and biology. Here is a link of the course and its index headings: https://nba.uth.tmc.edu/neuroscience/m/s4/index.htm I am interested in citing from chapter 11. Blood Brain Barrier and Cerebral Metabolism. by Pramod Dash Ph. D. Do you think I am authorized to cite from this website? The chapter has excellent information with no references attached. Should I contact the University and/or author to get permission or can I ethically/professionally cite the material? If I can cite from it do I need to ask for reference material used for the article understanding this may be private domain. Thankyou so much David, Donna

David said: Do you think I am authorized to cite from this website? You can cite any published work on-line or in print If I can cite from it do I need to ask for reference material used for the article understanding this may be private domain. Citing a work and quoting from it is fair use, it never requires permission unless you are using large parts of the work. You can quote a sentence or 2, not entire pages or chapters in another work.