Night gave way to day, and Saturday arrived.
From nine in the morning until just past noon, Yan Feifan was in a temporary operating room at Baining Hospital, where he gave a detailed demonstration of the puncture and injection procedure for cranial tumors to nearly two hundred observing medical colleagues.
First, he performed a cranial puncture to take a sample of the brain tumor tissue, then conducted an on-site protein dehydration and denaturation test using anhydrous ethanol.
Then, based on the results of the one-hour test, he performed the final cranial tumor puncture and injected the appropriate dose of anhydrous ethanol.
The process seemed simple and easy to perform, but the observing doctors were all professionals.
They all knew that designing the cranial puncture path, confirming the dosage of anhydrous ethanol, and even determining the waiting time for the ethanol to take effect were not decisions that could be made on a whim.
