Exact(7)
Optical observations are not as useful for accurate censuses of double stars in globular clusters because tens or hundreds of thousands of bright single stars are also detected in optical images, making the isolation of double stars in close orbits less efficient and reliable.
This is unusually high for Dictyostelium: homologous recombination at other loci is usually much less, usually between 0 30%, making the isolation of ts mutants much more tedious.
Unfortunately, only a very small percentage of UCB and MPB-derived CD34+ cells are in S/G2+M [6], [6], making the isolation of sufficient numbers of these cells extremely difficult.
Low socioeconomic status, concomitant with untimely and inadequate prenatal care, has been associated with preterm deliveries and low birth weights, making the isolation of specific risk factors problematic [17].
For instance, male meiocytes constitute about 1% of Arabidopsis anther tissues, making the isolation of meiocytes challenging.
Pheasants and partridges are known to harbour many fast-growing mycoplasmas, making the isolation of the slower-growing M. gallisepticum difficult [ 13].
Similar(53)
Chickens lack lymph nodes (McCorkle et al., 1979) and lymphoid tissues with equivalent function are difficult to visualise and isolate, which makes the isolation of cells and analysis of local immune responses challenging.
And French storytelling does at least consider the disappointment of existence (Leaving and The Father of my Children), indulges whimsy and eccentricity (Amélie and Gainsbourg), embraces the drama of middle age and takes risks, as with the magic realism in Un Prophète, which makes the isolation of a young Arab in a French prison oddly more real.
The tough cell wall of bacteria also can make the isolation of DNA difficult [25].
Thus, taking these issues into account makes the isolation of the phase shift contribution of (V_{text {E}}) and therefore electronic characterization of CIGS by EH challenging.
The exceedingly small percentage of LeX negative NSCs likely present in primary tissue, coupled with the harshness of cell sorting has made the isolation of LeX negative NSCs in vivo problematic.
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