Well, for instance in computer science all the theorems are completely culture free, so it is not impossible. But it is indeed difficult, and to be expected for the most part.
You can't tease this stuff apart. Part of the process of becoming a scientist is to become acculturated to that science.
i'd hesitate to say though that this means more abstract ideas are less culture-bound in the sense of being value-neutral. an abstract idea still carries at least the implicit assertion that this is an idea worth paying attention to, at the unavoidable opportunity cost paying attention to others. and ideas which seem entirely free-floating are probably worth paying special suspicion to.