build 1: fusedERPBBmasked2.fa.gz
Masked for entropy, ribo, plastid, 107 reference bacteria, and 500 finished bacteria.
Safe for use on bacteria.

build 2: fusedERPBmasked2.fa.gz
Masked for entropy, ribo, plastid, 107 reference bacteria.
Intended for very aggressive contamination-removal on microbial libraries.

build 3: fusedEPmasked2.fa.gz
Masked for entropy and plastids.
Intended for use in plants and fungi.

build 4: fused2.fa.gz
Concatenated genomes of organisms listed in FilterMicrobes.txt
Not masked.
Not intended for filtering; possibly useful for detection.

Bacteria used in masking were filtered to remove anything sharing a genus with the contaminant bacteria.