Volume 23 Number 6 2006

The cover shows a range of foodstuffs which contain biologically active sulfur-containing natural products.
DOI: 10.1039/b609523m

Volume 23 Number 5 2006

Plants: a state-of-the-art combination of "chemical factory" and "microbial fermenter". Image provided by R. X. Tan.
DOI: 10.1039/b609472b

Volume 23 Number 4 2006

Unidentified ascidian - Great Barrier Reef, December 2004. Photographer: Anke Kleuter, Australian Institute of Marine Science.
DOI: 10.1039/b609980g

Volume 23 Number 3 2006

The cover image shows the protein structure of the streptokinase, which is produced by beta-haemolytic streptococcus, 
inhibiting the fibrinolytic enzyme plasmin. It is used as an effective drug in myocardial infarction and pulmonary embolism.
DOI: 10.1039/B513504B

Volume 23 Number 2 2006

The cover shows marine benthic organisms from coral reefs in the Caribbean, many of which use natural products for defence. Clockwise from top left: the gorgonian 
Pseudopterogorgia elisabethae; the green alga Avrainvilleasp.; the stony coral Montastraeasp. overgrown by the red sponge Clionasp.; and the brown alga Stypopodium zonale.
DOI: 10.1039/B404735B

Volume 23 Number 1 2006

The cover photograph, taken by Peter Northcote during a recent dive collection at the Poor Knights Islands, New Zealand, is of the nudibranch Tambja verconis grazing on the bryozoan Bugula dentata
DOI: 10.1039/B502792F