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The phosphate-deoxyribose backbone and four bases are represented by custom plastic molds that show the shape of the molecules in proportion and illustrate the bonding between them
comprehensive series of teaching collections designed to assist both teacher and student in understanding basic earth science concepts through hands-on activities and carefully prepared teacher and student guides
Cross-section of the penis
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Boyles Law Apparatus Droppers The phosphate-deoxyribose backbone and fourIncluded: Boyle' s Law Apparatus Experiment Set. Used to demonstrate the relationship between pressure and volume of gas. The unit consists of a 1. 14" (29mm) dia. graduated cylinder with a piston and a screw valve. Cylinder acts upon a manometer through a narrow passage of 2. 3" (60mm) dia. Manometer dual scale is from 04 x 105 Pa and 058 PSI with needle set at atmospheric pressure. Its unique design can be used for any motion based experiment, and
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