Male has orange-red body color and female has white. Original d-rR strain established by Toki-o Yamamoto and provided to Tatuo Aida in 1951. Tasuo Aida gave this d-rR strain to Teturo Takeuchi in 27th June 1954. Kiyoshi Naruse took over this strain from Teturo Takeuchi in 12th October 2016.
Spontaneous mutant strains
National Institute for Basic Biology
Live in NIBB
National Institute for Basic Biology, Okayama Shoka University