Single V promotional videos from a varying span of time, alternate versions of the videos, often featured on the Single V that the video originally came from, and the TV spots for the singles. Although Hello! Project singles are usually accompanied by a Single V, frequently when a single is released near the same time that a Single V Clips is released, the single will not have a regular Single V. Instead, the promotional video and alternate shots of the video will appear on the Single V Clips. But no one knows what the "V" or "M" actually means. Single V A
Single-use bioreactor Single-use bioreactor A single-use bioreactor or "disposable bioreactor" is a bioreactor with a disposable bag instead of a culture vessel. Typically, this refers to a bioreactor in which the lining in contact with the cell culture will be plastic, and this lining is encased within a more permanent structure (typically, either a rocker or a cuboid or cylindrical steel support). Commercial single-use bioreactors have been available since the end of the 1990s and are now made by several well-known producers (See below) . Single-use bioreactors are widely used in the field of mammalian cell culture and are now rapidly replacing