Antigen Shift is an electro-industrial band hailing from Ottawa, Ontario, Canada led by Nick Thériault. The band takes its name from the medical phenomenon. Thériault began experimenting with electronic sounds in 2000, combining world beat music with haunting, sometimes distorted, rhythmic, richly-textured soundscapes. Antigen Shift released Primary Causation in 2001, a limited edition CD that was sold at the first installment of the Providence Noise Festival. The next year, Conjugate (a split with British band Detritus) was released on UK label Fleshmadeword.