Normalizes intensities of a gene in two samples

    :param df: dataframe output of GetData()
    :param sampleA: column header of sample A
    :param sampleB: column header of sample B

    :returns: normalized intensities

def NormInt(df,sampleA,sampleB):
    """
    Normalizes intensities of a gene in two samples

    :param df: dataframe output of GetData()
    :param sampleA: column header of sample A
    :param sampleB: column header of sample B

    :returns: normalized intensities
    """

    c1=df[sampleA]
    c2=df[sampleB]
    return np.log10(np.sqrt(c1*c2))