the total length of the dendrites of one pyramidal neuron ( ca1 ) increases from 1000 mum ( e21 ) to 5600 mum ( p20 ) , while the total amount of visible spines and the spine density increase from 20 to 3000 spines resp . from 0,02 to 0,55 spines/mum .
C0011305
dendrites
C0027882
neuron