listing in 1 line

hi

when I do
ps -aef | grep ....

I get the different parts each on 1 line.

if I do

a=`ps -aef | grep ...`
echo $a

I receive the result on 1 line. how to display it as before? i.e. each on 1 line?

thx

simple:)

a=`ps -aef | grep ...`
echo "$a"

wow.

i did not get the rule and the effect of this " "

thanks