Line in the sand match of the 2009 season, with the two sides battling for eighth place on the ladder, a brawl was sparked by a remonstration from a head-high shirtfront from Essendon captain Matthew Lloyd on Hawthorn midfielder Brad Sewell at the start of the third quarter, which was to be the turning point in the match. Essendon won by 17 points after trailing by 22 points at the time of the Lloyd-Sewell incident. Line in the sand match The line in the sand match is the unofficial title given to the round 11, 2004 match between Australian Football League (AFL) clubs and ,
Gene expression fundamentally natural process. Viruses are an excellent example where they replicate by using the host cell as an expression system for the viral proteins and genome. Doxycycline is also used in "Tet-on" and "Tet-off" tetracycline controlled transcriptional activation to regulate transgene expression in organisms and cell cultures. In addition to these biological tools, certain naturally observed configurations of DNA (genes, promoters, enhancers, repressors) and the associated machinery itself are referred to as an expression system. This term is normally used in the case where a gene or set of genes is switched on under well defined conditions, for example, the