Hi,
Im working on detecting enterotoxin genes especially haemolytic enterotoxins (HBL) genes in B. cereus strains. I'm not able to detect the gene even from the positive control, ATCC 14579 strain. Hbl genes have been detected in positive control in the journal which i used as reference.
But when I used the same primer sequence and cycling condition except for annealing temp, I am not able to get detect the gene. Have also tried gradient pcr.
Could gene polymorphism be a reason?? Any ideas??