Heavy precipitates tightly encased the Spy0129 crystals, which were removed using acupuncture needles when harvested for data collection.
The resulting heavy precipitate was removed by centrifuging at 30,000×g and 4°C for 60 min. The supernatant was designated the clarified rumen fluid.
Notably, cholesterol could not be incorporated into liposomes at concentrations higher than 10%, as indicated by the formation of a heavy precipitate.
Each coverslip was then incubated for 30 40 min at 37°C with 80 µl of DNA solution until a heavy precipitate formed (DNA solution: 5 µg DNA (plasmid pIRES2-EGFP, Clontech), 250 µl of 250 mM CaCl2 and 250 µl of BBS (in mM: NaCl 280, Na2HPO4 1.5, BES 50, pH 7.1)).
Unfortunately, no crystal hits were observed, and the MPD-containing conditions often produced a heavy precipitate.
A heavy precipitate immediately formed from this mixture, and single crystals emerged from the precipitate within days.
Urine from 6 babies could not be analyzed as volume available, after centrifugation (to remove the heavy precipitates in neonatal urine), storage, and transportation to the laboratory was found inadequate.
While heavy precipitates formed in all crystallization trials using the G1 and G2 dendrimers, good quality crystals were obtained for complexes of LecA with the monovalent ligands NPG, GalAG0, and GalBG0, and their X-ray structures were determined.
In the presence of both nitrate and sulphate (K2), the former dominated the process, precipitating the heavy metals as hydroxides and/or carbonates.
The overall separation of arsenic and other heavy metals and precipitate settling rates are optimum at n(Fe)/n(As) ratio of 3 1 and pH 6.
