CARDIAC-LOOP FORMATION IN CHICK PLATE 3 
BRADLEY M. PATTEN 
29 HOURS. 30 HOURS 32 HOURS 38 HOU 
RS y 
A 9 somites B 10 somites G ie Rene D } y 40 HOURS 
16 somites 18 somites 
42 HOURS 
F G 44 HOURS H 47 HOURS I 53° HOURS 
20 somites 22 somites 
29 somites 
25 somites 
Hep. S. 
VAO SVE ers 
65 HOURS 76 HOURS. 
J 33 somites 38 somites 100 HOURS 
45 somites 
397 
