part_of part of part of derives_from cultured cell Nicotiana tabacum cell type organism part TBY-2 Kalpana Panneerselvam BY-2 is a cell line of tobacco induced from a pith of Nicotiana tabacum L. cv. Bright Yellow No2 in 1968. This cell line was made by Dr. Kawashima at Hatano Tobacco Experimental Station of Japan Tobacco and Salt Public Cooporation BTO:0001972