We continue to explore the properties of the CA register . The proliferon consists of three processes (CA), a stem process (CA-1) which keeps the unit alive, and two transient processes. At t-15 CA-2 was injured. Three of its border cells were removed, which ultimately killed it.
Injury initiated a death process, called apoptosis, which extended over 31 states. The next experiment starts with the same injury. At t = 30 CA-3 copied the CA-2 state. Apoptosis was initiated, and soon CA-3 also died. The copied structure was state 15 (30-15) of the apoptotic process, which illustrates that any state of the apoptotic process, copied by CA-3 would have led to its death.
The copied states contain information for initiating
apoptosis . Unlike memories in conventional
computers our register does not store a description of apoptosis. It initiates it. Our memory does not store images
or data, but actions,
Memory is an active process which requires resources (age). CA-2 may be rescued in two ways. Either it resumes accumulating age which will alter its structure, and it will forget its apoptotic state-10. Or it may get the required age from another process . In the first case it will soon die from apoptosis. In the second case it will remain frozen, and when activated it will also die from apoptosis. As CA-2 loses age, its structure changes (differentiation), and may no longer initiate apoptosis in the recipient CA-3.
The last experiment starts with the injury at t-15. At t-25
CA-2 stops aging and remains in apoptotic state-10 At t-30 apoptotic state-10 is copied to CA-3. It ages 10 time steps, which brings it to
apoptotic state-20. It now stores
this state till t-145. Meanwhile
CA-2 loses age and dies. It is replaced by a zygote. At t-95, CA-2 copies state-20 from CA-3 and soon dies to be
replaced by a zygote. Despite a change in the structure of state-20, it still induces apoptosis