The phrase "aggregates could not be" is correct and usable in written English.
It can be used in contexts discussing data, statistics, or materials where aggregates are being referenced and their inability to exist or be formed is being stated.
Example: "In this scenario, aggregates could not be formed due to the lack of sufficient data points."
Alternatives: "aggregates cannot be" or "aggregates are unable to be".
Although the internal structure of the aggregates could not be visualized by PLM, the shape of the aggregates could be clearly identified as pod-like consistent with the TEM result.
In this respect, secondary aggregates could not be considered necessarily sub-optimal but could indirectly result from the trade-off between benefits and costs of the larger aggregate.
In addition, the cell aggregates could not be resolved by vortexing or sonication suggesting that the Δpmt4 strain may have a defect in cell separation, rather than altered cell adherence (Figure 3B).
We show for the first time that VAPB protein levels are reduced in ALS8-derived motor neurons but, in contrast to over-expression systems, cytoplasmic aggregates could not be identified.
These authors hypothesized that the formation of large bacterial aggregates that could not be ingested by phagocytic cells could be used to evade the immune system.
Using the model described by Shan et al (1998), Raji cells incubated with 1F5 plus a secondary Ab (but not with 1F5 alone) developed tight aggregates that could not be entirely dispersed by standard repipetting, and harsh pipetting appeared to cause significant levels of cell death.
Interestingly, filaments formed in the presence of an excess of RAD-51 tended to aggregate and could not be resolved in agarose gels after crosslinking.
Accurate cell counts of aggregated cells could not be obtained until the aggregates had dispersed, which required approximately 8 days.
In contrast, Rnq1PD expressed in [ pin−] cells did not form SDS-resistant aggregates and it could not be stained with ThT.
In contrast to loose aggregates, the spheres could not be dispersed by pipetting, but only by passage through a fine-mesh filter.
Like aggregated α-synuclein, aggregated γ-synuclein could not be extracted from transgenic mouse neural tissues using non-ionic detergents, but is partially soluble in sarcosyl-containing buffers.
