The phrase "aggressive upon" is not correct and does not sound natural in written English.
It is not a standard expression and may confuse readers. A more appropriate phrase would be needed to convey the intended meaning.
Example: "The dog became aggressive upon seeing the stranger."
Alternatives: "aggressive towards" or "hostile towards".
The contest itself did not exactly revolutionize genomics, but Venter's aggressive insistence upon faster sequencing methods throughout his career would have been influential even if no such race had occurred.
This is the first major lesson for environmental movement organizers: when people rise up they rise up because of unbearable socio-economic circumstances -- oppressive, corrupt regimes, austerity measures, and aggressive assaults upon their economic and civil rights.
PTEN also has a phosphatase-independent activity on tumorigenesis, which may be more tissue-specific or associated with a more aggressive phenotype upon loss of PTEN function [7].
We evaluated the speed of aggressive responses upon presentation of non-nestmate odors in the ant Camponotus aethiops, and explored whether essential cue integration steps take place at an early stage in the olfactory system by investigating the side-specificity of responses to non-nestmate odors.
Interaction between ants and plants bearing EF nectars may result in aggressive behaviour upon encounters with intruders.
However, they formed aggressive tumours upon co-implantation with a 'foreign body', i.e. a gelatin sponge, and the rate of tumour take ranged from 8%to58%8% among QR clones.
The accelerated lesion progression and more aggressive phenotype upon knockout of prostate epithelial cell IGF-1R in the TRAMP model has suggested that there are different thresholds for prostate IGF-1 signalling and that complete IGF-1R knockout cannot recapitulate diminished but intact IGF-1/IGF-1R signalling.
The person may display extremely aggressive behavior upon unavailability of drug, and pick an argument for no reason.
The most common and well-established approach is to define aggressive behaviour based upon its underlying motivation, distinguishing between reactive aggression and instrumental aggression.
Mr. Pecker said American Media would proceed with an aggressive digital strategy upon leaving bankruptcy.
