Table:
Combinationa	FICI in:
RPMI	MHB
CRO+CIP	0.3125	0.50
CRO+AZM	0.50	NAb
CIP+AZM	1	NA
CRO+LL-37	0.5	NA
CIP+LL-37	0.5	NA
AZM+LL-37	0.75	NA
CM+LL-37	1	NA

Render the table in Markdown format.

| <ROWSPAN=2> Combinationa | <COLSPAN=2> FICI in: | 
 | RPMI | MHB | 
 | --- | --- | --- | 
 | CRO+CIP | 0.3125 | 0.50 | 
 | CRO+AZM | 0.50 | NAb | 
 | CIP+AZM | 1 | NA | 
 | CRO+LL-37 | 0.5 | NA | 
 | CIP+LL-37 | 0.5 | NA | 
 | AZM+LL-37 | 0.75 | NA | 
 | CM+LL-37 | 1 | NA |