The chief sat in the shade on a plastic chair that his wives had brought from inside. He was dressed to go out, with his wooden accoutrements– the herding stick and club that every Maasai man usually carries – were laid across his knees. His truck’s engine was running on the other side…
Frozen tissue, blood samples, as well as other body fluids, are commonly stored in biobanks. Because these samples are stored for research purposes, it is of the utmost importance that they are of excellent quality. In a publication from Clinical Biochemistry, Dr. Bih-Rong Wei and Mark Simpson from the Laboratory of Cancer Biology and Genetics Read the rest of this article
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Fue Jöns Jacob Berzelius quien acuñase el término polímero (que significa “muchas partes”) en 1830 para referirse a sustancias como el etileno (C2H4) y el butileno (C4H8) que compartían la misma fórmula empírica reducida (CH2) pero cuyas fórmulas moleculares eran múltiplos de ésta (CnH2n). Los polímeros naturales como el almidón, la celulosa, las proteínas o el caucho se conocían