BBa_K823017
BBa_K823017 Version 1 (Component)
double terminator (B0012-B0011)

BBa_K1753000
BBa_K1753000 Version 1 (Component)
the omega subunit of E.coli RNA polymerase with T7 promoter, RBS and terminator(BBa_B0014)

BBa_K1479002
BBa_K1479002 Version 1 (Component)
Testing twins mechanism, same as BBa_B0014, no practical purpose