Systems biology: Metabolic balance sheets p.129
doi: 10.1038/420129a
Volume 420 Issue 6912
News & Views
Earth science: Is it all in the crust? p.130
doi: 10.1038/420130a
Applied physics: Terahertz power p.131
doi: 10.1038/420131a
Neuroscience: Single-neuron mnemonics p.133
doi: 10.1038/420133a
Solar physics: The Sun under a microscope p.134
doi: 10.1038/420134a
Medicine: Lipid signals in pain control p.135
doi: 10.1038/420135a
Developmental biology: First come, first served p.138
doi: 10.1038/420138a
Article
Serial deletions and duplications suggest a mechanism for the collinearity of Hoxd genes in limbs p.145
doi: 10.1038/nature01189
Letters
Dark cores in sunspot penumbral filaments p.151
doi: 10.1038/nature01173
High-power terahertz radiation from relativistic electrons p.153
doi: 10.1038/nature01175
Ferromagnetism of a graphite nodule from the Canyon Diablo meteorite p.156
doi: 10.1038/nature01100
Tristable nematic liquid-crystal device using micropatterned surface alignment p.159
doi: 10.1038/nature01163
Variability of El Nino/Southern Oscillation activity at millennial timescales during the Holocene epoch p.162
doi: 10.1038/nature01194
First-principles study of illite?smectite and implications for clay mineral systems p.165
doi: 10.1038/nature01155
Synchronization of animal population dynamics by large-scale climate p.168
doi: 10.1038/nature01064
Selective habituation shapes acoustic predator recognition in harbour seals p.171
doi: 10.1038/nature01030
Graded persistent activity in entorhinal cortex neurons p.173
doi: 10.1038/nature01171
The F-box protein Slimb controls the levels of clock proteins Period and Timeless p.178
doi: 10.1038/nature01122
Non-redundant role of the long pentraxin PTX3 in anti-fungal innate immune response p.182
doi: 10.1038/nature01195
Escherichia coli K-12 undergoes adaptive evolution to achieve in silico predicted optimal growth p.186
doi: 10.1038/nature01149
Metabolic network structure determines key aspects of functionality and regulation p.190
doi: 10.1038/nature01166
The heteromeric cyclic nucleotide-gated channel adopts a 3A:1B stoichiometry p.193
doi: 10.1038/nature01201
Establishment of transcriptional competence in early and late S phase p.198
doi: 10.1038/nature01150
