An osmotic sanitary collection bag for collecting fluid discharged from the vagina during menstruation. The osmotic sanitary collection bag includes an absorbent sponge having a plurality of drainage apertures disposed therethrough. Elongated adhesive strips extend away from the sponge and are adhered to a first surface of a conventional sanitary device to secure the osmotic sanitary collection bag in place. A collection bag abuts the absorbent sponge and is disposed in underlying relation to the absorbent sponge and the drainage apertures. The absorbent sponge is laced with salt, alcohol, and an odor-masking substance, such as sodium bicarbonate.

The subject matter disclosed herein is generally directed to methods and compositions for tagging cells of interest, tracking evolution of the tagged cells, and recovering the original tagged cells for further study. Specifically, cells are tagged with a DNA construct encoding a barcode sequence comprising a guide sequence. Barcoded cells can then be recovered using a reporter construct having CRISPR target sequences specific for the cell having a barcode of interest.