Cryo-processed

Unlike control and cryo-processed grafts, which showed moderate local inflammation and swift resolution of the transplants with phagocytes, high power-lased samples provoked long-terrn purulent reaction around the graft without appreciable phagocytic scavenging of the debris by phagocytic cells.

Source: wiktionary

However, the shape of axons and the composition of the microtubular and neuronal fiber network differ in comparison to cryo-processed specimens.

Source: wiktionary

Ridges correspond to the tiny depressions observed in ultra thin sections of cryo-processed samples (Fig. 4).

Source: wiktionary