 By January 1924, when Rainer's alleged Jewish extraction made him a target of antisemitic agitation among the students, Popa became Rainer's voice in professional disputes.As such, he accused a Iași anatomist, Victor Papilian, of plagiarism, and published his take on the matter in the Bucharest daily "Adevărul".Papilian retorted with accusations of sectarianism against Popa, Rainer, and the whole "Bucharest school"