We describe a gradient of potential HIV transmission from HIV-infected persons to their partners and thence to uninfected populations. The effect of this newly discovered transmission gradient is to ...
The decrease in liana diversity with increasing latitude has been indicated as the major physiognomic difference between tropical and temperate forests’ ecosystem. Despite the robustness of this ...
International Journal of Plant Sciences, Vol. 168, No. 5 (June 2007), pp. 555-562 (8 pages) The objective of this study was to investigate patterns of surface features of leaves related to ...
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