These are perhaps the most relevant databases for finding scholarly research articles for your project, but you might find more information in one of the Libraries' many other databases. See the "More Biology/Science Databases" links to find other places to search. For guidance, ask me!
Data can be tricky to get hold of. The two resources listed here are fairly new and may or may not have any data of interest. Data is sometimes also available as supplementary material to an article, especially more recent articles. If you want to find some data and want some advice, let me know!