These predictions were experimentally verified in arrays of microchannel constrictions with precisely engineered dimensions and in bulk passage through filters with well-defined pore size.
In addition, we selected for NPCs growing in monolayers and exhibiting identical morphology by keeping cells for 5-10 passages to filter out the remaining embryoid bodies.
Single-cell suspensions were prepared by passaging and filtering the cells (∅ 30 µm, BD Biosciences), followed by manual cell seeding.
Phoenix A supernatants were then harvested daily beginning 48 hr after transfection with retroviral vectors, filtered by passage through 0.45 µM filters (Millipore, Bedford, NY) and applied to cancer cell line monolayers for 24 hr in the presence of 8 µg/ml Polybrene (Sigma-Aldrich, St . Louis MO).
First of all, this kind of deployment scenario can force the captured blood clots to stay in the peripheral areas of the vena cava and keep the central passage of the filter unblocked.
By binding to other molecules, NGAL may exceed size limits for passage through the filter.
While predilution enables achieving higher filtration volumes, it dilutes the blood before filter passage and may reduce efficiency [ 6].
In 1892, the Russian botanist Dmitri Ivanovsky noticed that suspensions of plant tissues afflicted with mosaic tobacco disease were still infectious after passage through ceramic filters that retained bacteria.
Slight increase in the number of RBCs is probably due to the fragmentation, namely, the RBCs fragmented during the passage of the filters were counted as independent RBCs by the hematology analyzer used in this experiment.
Chitosan solution (10 mg/mL) was prepared by mixing 0.1 g chitosan (average molecular weight 54 kg/mol, deacetylation ratio 84%; Yaizu Suisankagaku Industry Co., Ltd., Shizuoka, Japan), 10 mL of PBS, and 100 μL of 5 M HCl; following complete dissolution of the chitosan, the solution was filter-sterilized by passage through a 0.2-μm filter.
