 Dr Amélie Catala wo kuri Kaminuza ya Rennes, yabwiye BBC ko nubwo hagicyenewe gukorwa ubundi bushakashatsi, bishoboka ko impinduka mu mikorere yubwonko zitewe nigicuri zishobora kuba ari zo zituma hasohoka imisemburo imwe yo mu bwonko itera iyo mpumuro. 