28th February Newsletter
Hi guys. This is the fourteenth newsletter from the Rejuvenation Science Institute (ICR). In these newsletters, we will tell you what we've done, since the last newsletter, to accelerate the development of rejuvenation science.
The first injection of the Rat Rejuvenation Experiment will be on March 16
In our last newsletter, sent at the end of January, we said that the Rat Rejuvenation Experiment would begin in April, but we had to bring the start of the experiment forward because the old Sprague Dawley rats in the Unicamp university animal facility are quite old and we don't want to risk them dying before the experiment begins. Therefore, we will administer the first injection of young Pig Plasma Extracellular Particles (PPEPs) on March 16, when the rats will be about 21 months old.
Thus, we have collected pig blood and are working full steam ahead to isolate young PPEPs and prepare the tests that will be carried out on the rats before the first injection, namely the grip strength and blood marker tests.
In addition to the older rats, we will also test young PPEPs in 7-month-old rats, but they will only receive their injections in a few months.
Interview on the Modern Healthspan channel
In February 2026, the YouTube channel Modern Healthspan published an interview with ICR's president Nicolás Cherñavsky about the ICR's experiments on rejuvenation and longevity in rats. To watch the full interview in English, click here. Keep in mind that YouTube now offers simultaneous subtitles in many languages.
This is a collective effort
This experiment is a collective effort to reproduce Harold Katcher's seminal study, in which the ICR relies on the contribution of those interested in the realization of the experiment. Thus, if you know someone who might be interested in the content of this newsletter, you can forward it to them. Also, if you are not yet a financial contributor of the ICR, we invite you to become one by clicking on this link.
So that's it. We're carrying on, and we won't rest until we've implemented rejuvenation in human beings. See you next time!