You perform a serial dilution, using a known concentration of 500 mg/mL in the first tube. Each tube contains 100 μLof dilutant. You withdraw 50 μL from tube 1 and add it to tube 2, and continue with the same dilution protocol forthe subsequent tubes. When you reach tube 11, you discard the 50 μL, leaving 100 μL of dilutant in tube 12.1-12 tubes

answer:

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Explanation:

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Coronavirus disease (COVID-19) technical guidance: Laboratory testing for ... to laboratories and stakeholders involved in laboratory testing of COVID-19 virus. ... Diagnostic testing for COVID-19 is critical to tracking the virus, understanding ... 2. WHO interim guidance for laboratory biosafety related to COVID-19 virus.

Explanation:

...~  "Your child's perception of death is abnormal and concerning for the developmental age. Your child should be focused on death as a distant event." ~...

Explanation:

https://www.seattlecca.org/diseases/brain-spinal-cord-cancers/brain-spinal-cord-cancers-facts/anatomy-brain-and-spinal-cord