Statistical evaluation of RET SNPs did not reveal significant differences between the control group and all patients, either between males and females with respect to frequency of polymorphisms.
In a negative sentence with "positive" verb "neither - nor" is used , but if I want to use "did not reveal", is "either" possible to use? Is it true?
It needs to say "nor" there.
It did not show this, nor did it show that.
However, the second part leaves out the "did it show" - it's understood.
The meaning is not at all clear when you change it to "either."