A method of analyzing cell populations in a blood cell suspension sample, comprising: (a) receiving first data, wherein the first data are generated by an analysis of a first aliquot of the sample with a flow cytometer particle analyzer, the flow cytometer particle analyzer having a fluorescence measurement device; (b) analyzing the first data to determine cell populations which are distinguishable from other cell populations as resolved cell populations in the first data and detecting at least one cell population which is not distinguishable from another cell population as an unresolved cell population in the first data, wherein the first data includes a cell population of at least one of a first cell type and a second cell type, wherein there is substantial overlap in location of the first cell type and the second cell type in a scatter plot of the first data; and wherein the first cell type comprises a Myeloblast cell population and the second cell type comprises a Plasmocyte cell population; or wherein the first cell type comprises a T blast cell population and the second cell type comprises a Basophil cell population; or wherein the first cell type comprises an Eosinophil cell population and the second cell type comprises an Immature Granulocyte cell population; (c) accessing second data stored on a storage device, wherein the second data were previously generated by interrogating a second aliquot of the sample using a hematology particle analyzer, the hematology particle analyzer having at least one of a cell volume measurement device, a light scatter measurement device, and a cell conductivity measurement device; and (d) resolving the at least one unresolved cell population in the first data as a population of cells of a first cell type or of a second cell type by identifying a signature pattern in a scatter plot of the second data indicative of the presence of the first cell type or the second cell type in the sample. (a) receiving first data, wherein the first data are generated by an analysis of a first aliquot of the sample with a flow cytometer particle analyzer, the flow cytometer particle analyzer having a fluorescence measurement device; (b) analyzing the first data to determine cell populations which are distinguishable from other cell populations as resolved cell populations in the first data and detecting at least one cell population which is not distinguishable from another cell population as an unresolved cell population in the first data, wherein the first data includes a cell population of at least one of a first cell type and a second cell type, wherein there is substantial overlap in location of the first cell type and the second cell type in a scatter plot of the first data; and wherein the first cell type comprises a Myeloblast cell population and the second cell type comprises a Plasmocyte cell population; or wherein the first cell type comprises a T blast cell population and the second cell type comprises a Basophil cell population; or wherein the first cell type comprises an Eosinophil cell population and the second cell type comprises an Immature Granulocyte cell population; (c) accessing second data stored on a storage device, wherein the second data were previously generated by interrogating a second aliquot of the sample using a hematology particle analyzer, the hematology particle analyzer having at least one of a cell volume measurement device, a light scatter measurement device, and a cell conductivity measurement device; and (d) resolving the at least one unresolved cell population in the first data as a population of cells of a first cell type or of a second cell type by identifying a signature pattern in a scatter plot of the second data indicative of the presence of the first cell type or the second cell type in the sample.