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5 of the following...Pathogen has antigens on its surface that are recognised as foreign by the immune systemT helper cells stimulate cytotoxic T cells, B cells and phagocytes (or lysosomes)HFAnswered by Harriett F. • Biology tutor2366 Views
World War I was caused by both long and short term factors, primarily the assassination of Archduke Franz Ferdinand at the height of Austria-Hungarian and Serbian friction, which acted as a trigger for th...
Hi,Your personal statement needs to tell the reader exactly why you are studying the subject you are applying for and your passion for it.It needs to remain very concise and to the point.You need to inclu...
y= -4x-1y2 = (-4x-1)2 = 16x2 +8x +1y2 +5x2 +2x = 0lets substitute what we found y2 equal to earlier, which gives us(16x2...
Atoms and elements are made of protons, neutrons and electrons. The nucleus is made of protons and neutrons, and the electrons surround the nucleus, as shown in the illustration below. The sum of the numb...
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