(a)[3]
Fill in Table 4.1.
(b)[4]
In 2011, the World Health Organization (WHO) issued recommendations to support countries in planning how to prevent the spread of HIV. Discuss the factors that need to be taken into account when making recommendations about preventing sexual transmission of HIV.
(c(i))[1]
List the processes in the correct order during one cell cycle.
(c(ii))[3]
Suggest and explain how the destruction of memory T$_h$ cells would result in a reduced secondary immune response.