nanogram

n.

毫微克；

Assay for nanogram quantities of DNA in cellular homogenates.
Fluorometric assay of proteins in the nanogram range
Determination of mercury in seawater at sub-nanogram per liter levels
A simple method to determine nanogram levels of 4-hydroxyproline in biological tissues.
Fluorometric method for the determination of nanogram quantities of inulin
Nanogram nitrite and nitrate determination in environmental and biological materials by vanadium(III) reduction with chemiluminescen...
Procedure for determination of free and total cholesterol in micro- or nanogram amounts suitable for studies with cultured cells
Enzymic method for quantitative determination of nanogram amounts of total and oxidized glutathione: applications to mammalian blood...
Sampling and analytical methods for the determination of copper, cadmium, zinc, and nickel at the nanogram per liter level in sea wa...
Improved staining of proteins in polyacrylamide gels including isoelectric focusing gels with clear background at nanogram sensitivi...