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the scalpel in 18k gold vermeil is a milestone piece
it is the foundational example used to introduce knot theory in any topology course
Albert Einstein derived E=mc² in 1905 as a consequence of special relativity
creating an abundant fossil record across all Palæozoic strata
Fight-or-flight
trisomy 21 - Down syndrome necklace | silver pp_neuro the scalpel in 18k goldTrisomy 21 necklace sterling silver If you teach chromosome 21 to medical students, you are also teaching Alzheimer's biology. The APP gene sits on chromosome 21. People with Down syndrome carry an extra copy, and their risk of early onset Alzheimer's is dramatically elevated. Jrme Lejeune discovered the extra chromosome in 1959, opening the entire field of cytogenetics. The Science Behind Trisomy 21 Trisomy 21 is caused by three copies of chromosome
