For which organ is the maximum recovery time extended to 12-16 hours?

The liver is the organ for which the maximum recovery time is extended to 12-16 hours. This extended timeframe is primarily due to the liver's unique characteristics and functions. As a vital organ involved in numerous metabolic processes, the liver can tolerate a longer period of cold ischemia during recovery and transplantation compared to other organs.

The preservation of the liver is critical because it plays essential roles such as detoxification, metabolic regulation, and synthesis of proteins. Post-recovery, the liver has a remarkable regenerative capability, which allows it to recover effectively even after being preserved for a longer duration. In contrast, other organs have shorter recommended times for viability, making the liver's recovery window distinctively longer in this context.