Hence, in these two cases (even when the isochrons are almost tangent to the limit cycle, which corresponds to Fig. 11), the use of PRFs and ARFs instead of PRCs seems not necessary.
In general, it seems not necessary to maintain a large number of stem cells around from day to day, due to their immortality, sensitivity to DNA damage and carcinogenic potential [57], [58], [59].
It seems not necessary to cure high-viscosity glass-ionomer sealants.
It seems not necessary that these patients are seen by a physician [ 7].
However since this intervention is aimed at affective symptoms and not at affective disorders a formal diagnosis seems not necessary.
From a societal perspective it is important to focus on cost-effective interventions and given the results of prior research [ 35], it seems not necessary to use higher incentives.
Research from the Erasmus Medical Centre Rotterdam, The Netherlands, finally showed that it seems not necessary to perform these exercises under supervision of a physiotherapist, because compared to individually performed exercises, exercises led by physiotherapy did not show any benefit in preventing relapse or subjective recovery within one year after the ankle injury [ 22].
It seemed not just polite but necessary.
It's an odd segment -- not quite erotic, not quite balletic, which makes it seem not quite necessary.
Robespierre and his chief aide, the eloquent Saint-Just, made regicide seem not just necessary but noble.
