Explain why you centrifuge blood samples. What is a PCR reaction, and why is it a useful technique? What is the importance of restriction fragment length polymorphism(RFLP) in diagnostic experiments? Why is a microscope used when studying biology? Why is it importan...
What is confounding, and why is this an important concept to be aware of when collecting data? Why is skepticism good in science? Why is cDNA useful in medical applications? Why can't we prepare fossil fuel from dead organisms in a laboratory? Explain why you centrifuge blood samp...
Samples were sonicated in 1 mL methanol for 30 min to extract phytoestrogens. 500 μL of methanol extract (and standards) were collected and added to a 1.5 mL centrifuge tube. An aliquot of 100 µL of internal standard was added to sample tubes. Samples were centrifuged at 14,...
The CSI Crime Scene Forensic Lab by Planet Toys, for example, lets young ones analyze blood and hair samples, study paper chromatography, and take fingerprints. The CSI DNA Lab even comes with a working centrifuge, an electrophoresis chamber, and a three-speed motorized lab for ...
through standard i-PRF protocols at low centrifugation speeds was compared with 1 mL of C-PRF collected from the buffy coat layer following high centrifugation protocols (3000脳g for 8 min on a horizontal centrifuge) to specifically concentrate cells within the platelet/leukocyte-rich buffy coat ...
Blood samples were collected by venipuncture in heparinized tubes (Vacutainer™, BD, Juiz de Fora, MG, Brazil) after 12 h of fasting and immediately centrifuged at 1,300 × gfor 15 min in a refrigerated centrifuge at 4 °C (Hitachi Koki™, model CFR15XRII Hitachinaka, Japa...
Post 16 h incubation, samples were spun at 1500× g for 30 min at 4 °C (5810R centrifuge, Eppendorf), and the supernatants were removed. To remove PEG residues, the pellets were combined and washed with 39 mL of 0.9% NaCl and transferred in 39 mL Quick-Seal® polypropylene ...