{"metadata": "scalar", "preferred": "scalar", "min_mpra_umi": "scalar", "max_mpra_umi": "scalar", "total_uniq_mpra_bc": "scalar", "by_cre_theta": "scalar", "by_cell_type_theta": "scalar", "theta": "scalar", "zi": "series", "by_cre_zi": "series", "by_cell_type_zi": "series", "reference_activity": "scalar", "by_cell_type_reference_activity": "scalar", "by_cre_reference_activity": "scalar", "cells_per_cell_type": "series", "excess_tfection": "scalar", "total_tfection": "scalar", "rep_ids": "scalar", "consider_missing": "scalar", "nb_only": "scalar", "n_negative_controls": "scalar", "transfection_model": "simplecount", "library_model": "simplecount"}