def analyse_one_drug(master, drug):
    """Function used by :func:`multicore_analysis`

    :param master: an instance of :class:`ANOVA`
    :param drug: a valid drug name


    """
    if drug in master.individual_anova.keys():
        res = master.individual_anova[drug]
    else:
        res = master.anova_one_drug(drug_id=drug, animate=False, output=
            'dataframe')
    return drug, res
