'corroborate the assertion' is a correct and usable phrase in written English.
It is usually used in situations where you are looking to verify or prove a statement or idea. For example, "We conducted a survey to corroborate the assertion that most people prefer chocolate ice cream".
A large selection of drawings, among them two views of the devastation of the 1654 arsenal explosion, corroborate the assertion in a catalog essay by Michiel C. Plomp that there is more to the Delft School than oil on canvas.
The Syrian Observatory for Human Rights, a Britain-based group with a reporting network in Syria, uploaded video on the Internet to corroborate the assertion, showing the aftermath of an explosion.
Further, these results corroborate the assertion that eggs reared at a constant temperature develop at a similar rate to that of eggs reared under ambient temperatures, given the mean daily temperature of the two groups is equal [7].
However, the assertion is also supported by an evidence of type 'developmental similarity evidence' (16), which allows to corroborate the assertion, using a different evidence type, and to grant the overall annotation high confidence.
Comparative analyses of these genomes corroborate the assertion that the Melainabacteria is a nonphotosynthetic lineage; however, they are robustly monophyletic with the photosynthetic cyanobacteria with which they share inferred common ancestral traits, such as cell envelope structure.
There was no way to corroborate the assertions.
It was impossible to corroborate the assertions independently.
The number of studies in all related fields corroborates the assertion that these systems are in their infancy and need to develop more in terms of efficiency and economizing.
The opinion of Das (2000) revealed that a change down in dry density might occur due to both the particle size and specific gravity of the soil and stabilizer corroborating the assertion by Rahman (1987).
Moreover, (^{15}{text{NO}}_{3} -amendments exhibiting a strong binomial relationship between 14N15N and 15N15N in each incubation (Table 1) corroborates the assertion that canonical denitrification would overwhelm anammox responsible for N removal from the shallow Chukchi Shelf waters [2].
This finding corroborates the assertion that factors other than surface wetness conditions also control SLEV transmission rates.
