PubMed was developed by the National Center for Biotechnology Information (NCBI). It was developed in conjunction with publishers of biomedical literature as a search tool for accessing literature citations and linking to full-text journals at web sites of participating publishers.
If there is an article that you really need or want, you can request it (most often for free) through interlibrary loan. Expect it to to take up to 10 days to receive item electronically via email.
If Rod Library does not own/subscribe to the material you need, the Interlibrary Loan (ILL) staff will try to get it for you. The ILL system is called ILLiad and uses your CatID & passphrase for logging in.