List of hard puzzles

Physcomitrella patens 4 DL4
Arabidopsis Thaliana RNA DL4
Methanobrevibacter FMBK1 DL4
Saccharomyces Cerevisiae DL4
Oryza sativa 2 DL4
RNA in Medicago Truncatula DL4
RNA in Zea Maize (Corn) DL4
Ochrobactrum DL4
Sargasso Sea Bacterioplankton DL4
Coxsackie-B DL4
RNA in Zea Maize 2 DL3
Leptospira Interrogans DL4
Octopus Spring DL4
Prevotella Albensis (all levels)

Great list, madde!