+------------COMP:N-N(in)-----------+    
       +-MOD_ATT:N-ADJ-+       +----OBJ:V-N----+                                        +--------------SUBJ:V-N-------------+                +-------------MOD_ATT:N-ADJ------------+                                          |            +-----COMP:N-N(in)-----+    
       |        +MOD_AT+       |      +MOD_ATT:+              +MOD_A+                   +SUBJ:V+             +MOD_AT+SUBJ:V-+                |                       +-MOD_ATT:N-ADJ+                                          |            |          +MOD_ATT:N-N+    
       |        |      |       |      |        |              |     |                   |      |             |      |       |                |                       |              |                                          |            |          |           |    
 In __SP__ , mutant __SP__ __NODE__ gene ( deletion with its A/B region and its AF 1 domain mutated ) and mutant __SP__ __NODE__ gene ( homozygous knockout ) and mutant __SP__ __NODE__ gene ( homozygous knockout ) cause little or no change in viability of __SP__ .
MOD_ATT:N-ADJ (__SP__,__SP__)
MOD_ATT:N-ADJ (__SP__,mutant)
OBJ:V-N (__NODE__,deletion)
MOD_ATT:N-N (deletion,gene)
MOD_ATT:N-N (region,A/B)
SUBJ:V_PASS-N (mutate,domain)
MOD_ATT:N-ADJ (__SP__,mutant)
SUBJ:V-N (__NODE__,domain)
SUBJ:V-N (__NODE__,__SP__)
MOD_ATT:N-ADJ (__NODE__,homozygous)
MOD_ATT:N-ADJ (__NODE__,mutant)
COMP:N-N(in) (little,__SP__)
COMP:N-N(in) (change,__SP__)
MOD_ATT:N-N (__SP__,viability)