The lack of species - specificity implies that zonae pellucidae harvested from animals of one species will induce an immune response in those of another since zonae pellucidae can be harvested from farm animals .
Another makes zona pellucida antigens readily available .
The lack of species - specificity implies that zonae pellucidae harvested from animals of one species will induce an immune response in those of another , which makes zona pellucida antigens readily available , since zonae pellucidae can be harvested from farm animals .