Journal of Plant Pathology, Vol. 95, No. 1 (March 2013), pp. 191-195 (5 pages) Phenylalanine ammonia-lyase (PAL) is an important plant enzyme in pathogen defense. The purpose of this work was to ...

Part of Biology (Single Science) Exchange and transport in animals Note that left and right refers to the side in the person's body, not how it is viewed on the page. The systemic circulation is under ...

Note that left and right refers to the side in the person's body, not how it is viewed on the page. The systemic circulation is under high pressure - it has to deliver blood to the extremities of the ...