aggregateBioVar         Aggregate subject-level biological variation
countsByCell            Within cell type gene-by-subject matrices
countsBySubject         Gene-by-subject count matrix
scSubjects              SingleCellExperiment subject values
small_airway            Small Airway 'SingleCellExperiment' object
subjectMetaData         Collate metadata variation
summarizedCounts        Aggregate feature counts and metadata by
                        subject
