Frozen tissue samples were homogenized (150 mg/ml) in a tissue homogenization buffer [250 mM sucrose, 20 mM Tris base and protease inhibitors (Sigma #8340 protease inhibitor cocktail; 10 μl per millilitre buffer)] using a glass vessel and piston-type Teflon pestle.
Andraka's work has not yet been published in a peer-reviewed journal, but the work he presented at the Intel science fair shows impressive results: the sensor could detect 0.156 nanograms of mesothelin per millilitre of blood, well below the limit of 10 nanograms per millilitre used to show that too much mesolthelin is being produced, a sign of pancreatic cancer.
The change in sperm concentration to 49.9m per millilitre is still within the normal range, and above the lower threshold of 15m per millilitre used by fertility doctors, said Pacey.
The arterial input function was derived from the time-attenuation curve from ROIs comprising both anterior cerebral arteries in cross section, and the rCBF (in millilitre per minute per 100 mL) was calculated using a deconvolution approach.
All monoclonal antibodies (mAbs) were added at saturating concentrations and the cells were incubated for 30 minutes on ice, washed twice, resuspended in staining buffer at a concentration of 5 × 10 cells per millilitre, and analyzed using an LSR II (BD Biosciences, Mountain View, CA, http://www.bdbiosciences.com/).
One millilitre of gas was collected using a gas-tight syringe and injected into a gas chromatography (Focus GC, Thermo Fisher Scientific, MA, USA) equipped with a capillary column CP-carboPLO T P7, Varian, CA, USA) and flame-ionisation detector for ethylene determination.
When synovial fluid was directly aspirated from the joint, the number of leukocytes per millilitre of synovial fluid was counted using a haemocytometer; a cell count measurement was not performed when the sample was obtained by lavage.
Fifteen millilitres of the ascites fluid was then concentrated using a Vivaspin 20 mL ultrafiltration spin column with a 10 kDa cutoff membrane (Sartorius Stedim Biotech), according to the manufacturer's instructions (columns were pre-equilibrated with water before use).
SESIs consisted of 80 milligrams of triamcinolone in 10 millilitres of normal saline and were administered using a lumbar translaminar approach without additional imaging, one level above the presumed LRS in either sitting or lateral position.
HSV-1 and HSV-2 stocks containing 3.4 × 107 and 1.02 × 108 virus particles per millilitre respectively were subject to 2-fold serial dilution using a HSV-negative clinical specimen as a diluent.
