Here we have an explanatory, mildly argumentative thesis that enables the writer to express an opinion. We infer from the use of the word convincing that the writer will judge the various reasons for protecting the rights of AIDS patients; and, we can reasonably assume, the writer himself believes in protecting these rights. Note the contrast between this second thesis and the first one, where the writer committed himself to no involvement in the debate whatsoever. Still, the present thesis is not as ambitious as the third one, whose writer implicitly accepted the general argument for safeguarding rights (an acceptance he would need to justify) and then took the additional step of evaluating the merits of those arguments in relation to each other. (Recall that Anthony Jones's plan was the "most sensible.")
Destruction of healthy cells is one of the main problems with traditional chemo treatments. TKIs, however, are targeted in that the different types can be cancer-specific, acting upon pathways that have gone awry in the specific cancer. Furthermore, it is often a case that the kinase itself is slightly different from the normal version, meaning that the inhibitor can work specifically on cancerous cells. The only other current treatment that works in a similar way is using monoclonal antibodies , which can be used to target cancerous cells in preference over healthy ones.