In one embodiment, the invention relates to a composition suitable for preparing a hydrogel useful as replacement material for all or part of a disc nucleus. The device generally includes a probe with a distal exit at an exit angle relative to the probe, a cutting loop with shape memory having a preconfigured shape, and a loop securing mechanism to secure the cutting loop in a penetrating configuration and to release the cutting loop into a cutting configuration. Also provided by the invention are tissue cultures of the cotton variety MCS0701B2RF and the plants regenerated therefrom. Advantageously, the user of the eyewear is able to easily monitor their degree of activity. It is provided that at least part of the locking device and the rotational bearing device be formed in one piece. The tower reinforcement apparatus includes bolts supporting a first flat bar and a second flat bar on each side of the tower.