Sentence examples for serum samples were placed from inspiring English sources

Blood samples were kept in total darkness before being centrifuged, then serum samples were placed into −80 °C until MT measurement was performed.

The samples were centrifuged for 8 min. at 3000 rpm, then serum samples were placed into -80 °C in 500 µl test tubes dedicated for photosensitive material.

Serum samples were placed in designated microwells.

Then aliquots of the serum samples were placed in 1.5-mL Eppendorf tubes and stored at −40°C for future use.

In brief, all blood and serum samples were placed in plain polystyrene tubes, delivered on the same day at BRP and stored at −20°C.

The serum samples were placed in a cryobox and frozen at –20°C, then shipped on dry ice to the CDC's NCEH laboratory.

For virus isolation, 200 µL of the tissue homogenate or serum sample was placed on confluent MDCK cells in 24-well plates to incubate for 1 hr.

An aliquot of 25-μL diluted serum sample was placed on a coated well and incubated at 37°C for 30 minutes in a moist chamber.

For serum analysis, remaining blood samples were placed in serum separation tubes (BD Vacutainer tubes), centrifuged and the serum stored at -80°C for later analysis.

Serum and tissue homogenate samples were placed in a medium containing 1.8 mmol L−1 from one of the three substrates (acetylthiocholine, propionylthiocholine, or butyrylthiocholine), with 0.32 mmol L−1 DTNB.

Blood was centrifuged in the field at ambient temperature at 3,000 rpm for 15 min. Serum, blood pellets, urine, and pharyngeal samples were placed in a container of charged nitrogen until their arrival at the laboratory, where they were stored at –80°C.