Peter, turn up in intensive care, being transported from another place (9)

'transported from another place' is the definition.
I can't judge whether this definition defines the answer.

'peter turn up in intensive care' is the wordplay.
'peter' becomes 'allen' (I can't justify this - if you can you should believe this answer much more).
'turn up' becomes 'og' (I've seen this in other clues).
'in' means one lot of letters goes inside another.
'intensive care' becomes 'IC' (abbreviation for intensive care).
'allen' going around 'og' is 'allogen'.
'allogen'+'ic'='ALLOGENIC'

'being' is the link.

Can you help me to learn more?