PLATE 6 
A. —Sieve tube with nucleus and slime body. X8oo. 
B. *—Sieve tube with slime body and nucleus in metaphase. X1500. 
C. —Two sieve tubes with large nucleus and two slime bodies. X800. 
D-—Sieve tube with slime body. Notice that the slime body is not homogeneous 
throughout. X800. 
E.—A more mature sieve tube with a large and small slime body. X800. 
85606—24 - 3 
