I have a couple of things to say that might shed some light on what you guys are discussing.
1. Prism is a medical emergency. What’s basically happening is the veins that allow blood to leave your penis are effectively “clamped down” through body mechanisms. In turn, the arteries that supply blood to the erectile tissues of the penis stop supplying the penis with oxygenated blood. Therefore, the penile tissues are not getting any oxygen. This is seen not only in sickle cell patients, but in people who overdose on medications such as Viagra, Cialis, etc. Basically, if you have priapism for an extended period of time (~1+ days), your penis does not get any oxygen and essentially “dies” the same way your heart “dies” during a heart attack in what is called an infarct. I would highly advise against inducing priapisms or any mechanism leading to priapism.
2. This infarction or cell death I was talking about earlier happens in sickle cell patients because their red blood cells (RBCs) lack the ability to deform and thus squeeze through tiny blood vessels or capillaries. In a normal person, RBCs are elastic and can change shape to fit through any size vessel. Patients with sickle cell have rigid RBCs that tend to get stuck in small vessels, thus impeding blood flow. If these RBCs get stuck in capillaries of the penis, blood will be unable to flow through that capillary, thus trapping blood into any compartment that runs before the blockage. Patients with sickle cell anemia eventually lose their spleens due to repeated blockages like this, eventually causing total death of the tissue. This is probably not something you want to try in order to increase the size of your dick. However, injecting yourself with sickle cell blood is unlikely to have any effect anyway. You have to remember that every single RBCs in a sickle cell patients body is abnormal whereas all of your are. Therefore, putting a small amount of sickled RBCs will likely have no effect.
I’m happy to use my knowledge to help you guys understand or possibly develop a theory on safe and effective tissue growth in the penis, but I would highly highly recommend against inducing any sort of priapism or using sickle cell blood.