Database of verified butterfly and moth records in the United States and Mexico. Includes distribution maps, photographs, species accounts, and species checklists for each county in the U.S. and each state in Mexico.
Collection of images, movies, illustrations and animations in development biology, histology and pathology, immunology, microbiology and parasitology, molecular and cellular biology, neuroscience, plant biology.
List of plant species (over 28,000 names) that have been cited in specific references as weeds. Additional information may be available, such as native range, whether the plant has reported medical/herbal uses, etc.
Tutorials to help science undergraduate students with advice and assistance on the most important aspects of scientific research such as statistical analyses, reviewing the literature, planning research, writing or presenting.
Database of natural lipids including fatty acids, glycerolipids, sphingolipids, steroids, and various vitamins. Contains more than 6000 unique molecular structures, their lipid names, spectral information, and literature information.