Description:
This model of the HIV virus is enlarged millions of times to show the outer lipid membrane with protein structures and the internal nucleoproteins and...
Description:
Appropriate for grades 6 to 12Brings the First Law of Thermodynamics to life! This pair of precision-machined, chrome-plated steel ball...
Description:
When minerals, rocks, and fossils cannot be accurately identified by macroscopic observation and testing, thin section slides can reveal the compositi...