A method for screening and localising at least one species of interest on a microfabricated device defining a high density array of microwells for cultivating at least one cell from a sample, at least one microwell of the high density array of microwells comprising the at least one cell and at least one unique tag to identify the at least one microwell of the high density array of microwells in which at least one species of the at least one cell is cultivated, the at least one unique tag comprising a nucleic acid molecule, the nucleic acid molecule comprising: a target-specific nucleotide sequence for annealing to a target nucleic acid fragment present in at least one species of interest of the at least one cell; and a location-specific nucleotide sequence for identifying the at least one microwell of the high density array of microwells, the method comprising: incubating the microfabricated device to grow a plurality of cells from the at least one cell in the at least one microwell of the high density array of microwells; splitting the plurality of cells in the at least one microwell of the high density array of microwells into a first portion of the plurality of cells and a second portion of the plurality of cells, the at least one unique tag remaining with at least the first portion of the plurality of cells, wherein the second portion of the plurality of cells may be in the same microwell in which they were cultivated, attached to an optional membrane that was covering the microwell in which they were cultivated, and/or transferred to another location on a second device with a corresponding high density array of microwells; analyzing the first portion of the plurality of cells to: determine the at least one species of interest; and identify the at least one microwell of the high density array of microwells in which the at least one species of interest was cultivated based on the at least one unique tag; and based on identifying the at least one microwell of the high density array of microwells in which the at least one species of interest was cultivated, locating the at least one species of interest within the second portion of the plurality of cells. a target-specific nucleotide sequence for annealing to a target nucleic acid fragment present in at least one species of interest of the at least one cell; and a location-specific nucleotide sequence for identifying the at least one microwell of the high density array of microwells, the method comprising: incubating the microfabricated device to grow a plurality of cells from the at least one cell in the at least one microwell of the high density array of microwells; splitting the plurality of cells in the at least one microwell of the high density array of microwells into a first portion of the plurality of cells and a second portion of the plurality of cells, the at least one unique tag remaining with at least the first portion of the plurality of cells, wherein the second portion of the plurality of cells may be in the same microwell in which they were cultivated, attached to an optional membrane that was covering the microwell in which they were cultivated, and/or transferred to another location on a second device with a corresponding high density array of microwells; analyzing the first portion of the plurality of cells to: determine the at least one species of interest; and identify the at least one microwell of the high density array of microwells in which the at least one species of interest was cultivated based on the at least one unique tag; and based on identifying the at least one microwell of the high density array of microwells in which the at least one species of interest was cultivated, locating the at least one species of interest within the second portion of the plurality of cells. incubating the microfabricated device to grow a plurality of cells from the at least one cell in the at least one microwell of the high density array of microwells; splitting the plurality of cells in the at least one microwell of the high density array of microwells into a first portion of the plurality of cells and a second portion of the plurality of cells, the at least one unique tag remaining with at least the first portion of the plurality of cells, wherein the second portion of the plurality of cells may be in the same microwell in which they were cultivated, attached to an optional membrane that was covering the microwell in which they were cultivated, and/or transferred to another location on a second device with a corresponding high density array of microwells; analyzing the first portion of the plurality of cells to: determine the at least one species of interest; and identify the at least one microwell of the high density array of microwells in which the at least one species of interest was cultivated based on the at least one unique tag; and based on identifying the at least one microwell of the high density array of microwells in which the at least one species of interest was cultivated, locating the at least one species of interest within the second portion of the plurality of cells. determine the at least one species of interest; and identify the at least one microwell of the high density array of microwells in which the at least one species of interest was cultivated based on the at least one unique tag; and based on identifying the at least one microwell of the high density array of microwells in which the at least one species of interest was cultivated, locating the at least one species of interest within the second portion of the plurality of cells.