
Orbit-Small-DNA-Model-Kit-Cochranes-Of-Oxford-0039-When-assembled-the-Orbit-Small-DNA-Model-Kit-from-Cochrane-s-of-Oxford-shows-each-base-guanine-cytosine-thymine-adenine-&-uracil-by-a-different-colour-&-shows-the-sugar-rings-phosphate-groups-&-hydrogen-bonds-in-black-red-&-white-respectively-Orbit-Small-DNA