Sentence examples for remains problematic to identify from inspiring English sources

Major histocompatibility complex associations have been found for many diseases, but it remains problematic to identify the causative variation.

The heavy ion component of the cosmic radiation remains problematic to the assessment of risk in manned space flight.

Philosophers of the seventeenth century were sketching out a concept that remains problematic to this day.

However, it remains problematic to determine the parameters of V and K.

An influx of African recruits had, according to Raqqawi, made it increasingly problematic to identify the Britons.

However, when considering crime in both place and time, it is problematic to identify crime rates.

Both groups are problematic to identify but could be very important.

Delivering assistance to the northern area remains problematic due to road bandits and clashes between armed groups and government forces.

Yet this remains problematic due to the complexity of the cell wall composition.

However, direct introduction of aqueous solution into the microplasma for the detection of metals remains problematic due to plasma instability.

Monitoring treatment remains problematic due to the paucity of sensitive biomarkers.