Sentence examples for weeks of collection from inspiring English sources

Urinary arsenic concentrations were measured in a spot sample collected during the physical examination and analyzed within 3 weeks of collection using high-performance liquid chromatography (HPLC) coupled to inductively coupled-plasma dynamic reaction cell mass spectrometry (ICP-DRC-MS).

The soil samples for microbial analysis were processed within two weeks of collection.

Urine and sputum supernatants were thawed usually within 2 3 weeks of collection, and further processed according to the manufacturer's instructions.

However long term storage of samples at −47°C for 8 months prior to analysis resulted in a decrease in the R2 value (from 0.96 to 0.86) and an increase in the blue shift compared to samples analyzed within two weeks of collection (Fig. S1B).

All samples were stored in a 4°C freezer within two weeks of collection.

Filters were collected from the field within 72 hours of sampling and post-weighed within 2 weeks of collection.

The tissues collected from two minipigs per each week of collection were used in histomorphometric analysis.

The worms are maintained in serum-free media in vitro as described elsewhere37; secretion product is collected every 3 days for a maximum of 3 weeks (samples used here were from the first week of collection) and purified as follows: eggs are removed by spinning at 400 g before filtering of the secretion through 0.2-μm filter (Millipore).

The samples were subjected to refrigeration and analysis within a week of collection.

We extracted total DNA within one week of collection using the Puregene Bacteria DNA purification procedure with the following modifications.

Raw sewage samples were obtained from the Kyrene Water Reclamation Facility in Tempe, AZ and were used within one week of collection.