An examination of Baker's acid haematein test for phospholipines.

R E S U L T S A N D D I S C U S S I O N . . . . . . . . . . . 4 6 8 S t a n d a r d r e s u l t s o b t a i n e d w i t h t h e a c i d h a e m a t e i n a n d p y r i d i n e e x t r a c t i o n t e s t s . 4 6 8 T h e s t a g e s o f t h e t e s t s . . . . . . . . . . . 4 6 9 I n v e s t i g a t i o n o f t h e t e s t s . . . . . . . . . . 4 7 0 ( a ) R o l e o f t h e c a l c i u m i o n s i n fixation a n d m o r d a n t i n g . . . . . 4 7 0 (b) E v i d e n c e f o r a c h r o m i u m c o m p o u n d i n t h e t i s s u e s . . . . . 4 7 2 ( c ) C o m p l e t e n e s s o f e x t r a c t i o n b y p y r i d i n e . . . . . . . 4 7 3 (d ) S u b s t a n c e s s t a i n i n g af ter p y r i d i n e e x t r a c t i o n b u t n o t af te r ac id h a e m a t e i n . 473 (e) Spec i f ic i ty a n d t h e p e r i o d of c h r o m i n g . . . . . . . 4 7 4 ( / ) T h e b l u e a n d b r o w n c o l o r a t i o n s . . . . . . . . 4 7 5