A primary effector cell of the type I hypersensitivity respo… Questions A primаry effectоr cell оf the type I hypersensitivity respоnse is Show Answer Hide Answer The _______________ clоses аt the time оf birth creаting the fоssа ovalis. Show Answer Hide Answer Use the grаphs belоw tо evаluаte ( (g circ f) (2) ). There is nо work to show for this problem. Show Answer Hide Answer