Cells are routinely frozen and thawed in labs doing cell culture. Tissue is a lot harder, but if you use a different medium (routine during cryopreservation) you can probably preserve even microscopic structures such as synapses.
Cells are routinely frozen and thawed in labs doing cell culture. Tissue is a lot harder, but if you use a different medium (routine during cryopreservation) you can probably preserve even microscopic structures such as synapses.