| B1U4 folates | 30 | October 23, 2009 |
| B1U4 diseases of DNA repair | 14 | October 23, 2009 |
| B1U4 Eukaryotic DNA replication | 27 | October 23, 2009 |
| B1U4 E. Coli DNA replication | 26 | October 23, 2009 |
| B1U4 DNA repeat expansion disorders | 7 | October 22, 2009 |
| B1U4 Helicase diseases | 10 | October 22, 2009 |
| B1U4 Intercalators | 6 | October 19, 2009 |
| B1U4 Meiosis | 10 | October 16, 2009 |
| B1U4 nucleotide metabolism 2 | 44 | October 15, 2009 |
| B1U4 nucleotide metabolism | 53 | October 15, 2009 |
| B1U3 heme catabolism | 32 | October 9, 2009 |
| B1U3 heme synthesis | 27 | October 9, 2009 |
| B1U3 Hemostasis | 55 | October 9, 2009 |
| B1U3 dyslipidemia: diet & drug therapy | 20 | October 4, 2009 |
| B1U3 dyslipidemia | 17 | October 3, 2009 |
| B1U3 Signal transduction | 20 | October 3, 2009 |
| B1U3 lipid metabolism | 23 | October 3, 2009 |
| B1U3 Lipid Digestion and Transport | 25 | October 3, 2009 |
| B1U3 RBC 1 | 56 | October 1, 2009 |
| B1U3 AA as sources of energy | 40 | September 30, 2009 |
| B1U3 Urea Cycle | 19 | September 30, 2009 |
| B1U3 Amino Acids 1 | 36 | September 30, 2009 |
| B1U3 bile salts | 19 | September 29, 2009 |
| B1U3 Lipids 5 | 21 | September 29, 2009 |
| B1U3 Lipids 4 | 33 | September 28, 2009 |