axon

but if the genetic material of bacteria is shared by plasmids does it mean that the material is altered between plasmids and nucleoid or that mutations occur in the genetic material of plasmids? it is interesting thing because i thought that plasmids do not change with time . I apologize for grammatical mistakes if any, occured but English is my second language and thanks for the replies .

Hello i was wondering how is it possible for bacteria to gain genes responsible for antibiotic resistance , after all, it is obvious that bacteria can not produce new genetic information just because there is an antibiotic in environment .

not really because still we have a problem how to replace damaged cell ,but stem cells can differentiate (not sure if this is right word i mean just "get older/change " ) when injected in to for example grey matter ( in theory at least ) now research is being conducted on this topic to treat amyotrophic lateral sclerosis .