def construct_genetic_modification_N(
        testapp,
        lab,
        award,
        document,
        target):
    item = {
        'award': award['@id'],
        'documents': [document['@id']],
        'lab': lab['@id'],
        'category': 'insertion',
        'purpose': 'tagging',
        'nucleic_acid_delivery_method': ['stable transfection'],
        'introduced_tags': [{'name':'eGFP', 'location': 'N-terminal'}],
        'modified_site_by_target_id': target['@id']
    }
    return testapp.post_json('/genetic_modification', item).json['@graph'][0]