Maintenance aside, a lack of storage remains a bottleneck in the south.

It remains a bottleneck in an economy still staggering under bad debts.

The interpretation of genomic alterations remains a bottleneck for realizing precision medicine.

Protein expression remains a bottleneck in the production of proteins.

But manufacturing remains a bottleneck for many small-time hardware creators.

Still, the commodity sector remains a bottleneck for the quick expansion of yuan usage worldwide.

Background: Diagnosis of basal-like breast cancer (BLBC) remains a bottleneck to conducting effective clinical trials for this aggressive subtype.