# Wave bioreactors for seed-train expansion

Upstream — fermentation & cell culture — Single-use wave and rocking bag bioreactors — expand CHO, HEK293, stem-cell and cell-therapy seed trains via low-shear wave agitation with no impeller and no CIP.

Source: https://en.bioecon.ru/market/upstream/wave-bioreactors-seed-train-expansion/