Hi all,

I am trying to get a list of genes that can distinguish 24 cell types. After
comparing each cell type to the grand mean, I got a list of genes for each
cell type. I want to check the intersect of all the lists and the unique
genes for each cell type. I thought to use logical operators, such as XOR
and intersect, but I found that all these operators are for two vectors
only. Does anybody know if there is operator functions for several vectors.

To explain my problem more clearly, here is an example...

A = c("a","b","c")
B = c("e","f","a")
C = c("a","g","l")

I want the outputs to be

intersect_output = c("a")
xor_output = c("b","c","e","f","g","l")

Thank you in advance,
Wendy

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