def crispr_deletion_1(testapp, lab, award, target):
    item = {
        'lab': lab['@id'],
        'award': award['@id'],
        'category': 'deletion',
        'purpose': 'repression',
        'method': 'CRISPR',
        'modified_site_by_target_id': target['@id'],
        'guide_rna_sequences': ['ACCGGAGA']
    }
    return testapp.post_json('/genetic_modification', item).json['@graph'][0]