However , the positioning of the stalk is not necessarily conserved at the pole of the cell body in different closely related species .
Caulobacter crescentus is a member of a group of bacteria that possess the stalk structure , a tubular extension from the cell body .
The positioning of the stalk is not necessarily conserved at the pole of the cell body in different closely related species .
Caulobacter crescentus is a member of a group of bacteria that possess the stalk structure , a tubular extension from the cell body .