References in periodicals archive ?
In this case, an under-delivery of one microliter in the first dilution causes an 18 percent error, and the error grows with each subsequent dilution to reach 64 percent by the fifth dilution in a series.
Eligibility requirements included a baseline platelet count of <30,000 platelets per microliter (or <50,000 platelets per microliter for patients taking corticosteroids), an ITP diagnosis three months prior to study start, and one previous ITP treatment with no history of thrombosis.
It is exciting that most patients in this study achieved platelet counts of greater than 50,000 per microliter, despite how refractory they were, from a starting count of approximately 18,000," said James B.
First, Wheaton is introducing easily downloadable certificates that verify the cleanliness and dimensional consistency of the company's MicroLiter Certified Vials, which further enhance the only vials available that are certified as 10K processed.
Secondary study objectives were to evaluate platelet responses defined as either (1) doubling of baseline count and a platelet count greater than or equal to 50,000 platelets per microliter or (2) a platelet count increase of greater than or equal 20,000 platelets per microliter from baseline.
Couples in which both partners were 18 or older were eligible to participate if one partner was HIV-1 seronegative and the other had tested positive for HIV-1 and HSV-2, had a CD4 count of 250 per microliter or higher, did not have AIDS and was not receiving antiretroviral therapy.
Not only can scientists now transfer microliter volumes for a wide range of fluids without contact and without pipette tips, they never have to be burdened with instrument calibration again.
WHEATON's MicroLiter unit supplies vials and consumables for the chromatography autosampler market.
The principles behind microliter spectrophotometry are the same as for standard spectrophotometry: different light spectra are passed through a sample and the absorbance or transmission of this light provides information about the sample, such as concentration levels.
Public Health Service (USPHS) in 1995 recommended starting PCP prophylaxis when the patient's CD4 count falls to 200 or fewer cells per microliter, or if the patient develops thrush.