BSK5-2 Two Well Interface Brain Slice Keeper

BSK5-2 Two Well Interface Brain Slice Keeper

FEATURES

  • Slices maintained for many hours at an interface with incubating media
  • Two rings allow separation of different types of preparations
  • Slices supported on a quick change nylon net with optional attached porous memrane
  • Modular design simple to set up and maintain

Description

DESCRIPTION

The BSK5-2 Two Well Interface Brain Slice Keeper has been designed to pre-incubate a large number of brain slices prior to transfer into recording chambers. Based on the BSK4, it consists of two closely fitting acrylic rings, located in a half cylinder manifold. The close fitting rings allow a removable sheet of nylon netting to be wedged and held in place. In this slice keeper, the slices are maintained at an interface between the incubation medium and a humidified, high oxygen atmosphere within the holding vessel. Furthermore the slices can be maintained on a flat porous membrane (eg *Millicell-cm, 0.4um Cat.# PICMORG50 from Millipore) attached to the nylon netting in order to maintain the underside of slices perfectly flat for subsequent experiments utilizing microscope techniques.

In operation, the manifolds carrying two rings each are located in the base of the holding vessel and are partially immersed with ACSF by filling to the level of the netting. The purpose-designed holding vessel is supplied with a 95% O2, 5% CO2 gas mixture via a ceramic air-stone. The air-stone is located to the side of the manifold in BSK5-2. The bubbles rising from the base saturate the ACSF and provide constant circulation of medium to the slices from the underside. Typically slices are placed on lens tissue which rests on the nylon nets or optionally on porous membrane discs attached to the netting. Bubbles are prevented from rising and being trapped under the slices by the half cylinder deflector, thereby ensuring a continuous circulation of medium. Slices remain viable for many hours in these conditions. The BSK5 together with the holding vessel can be easily placed into a water bath for regulating the incubating temperature as desired. A lid with a conical profile ensures that condensation drops do not fall directly on top of the slices. The typical fluid volume with BSK5-2 is around 250ml.

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