i'm not joking. there is a lot of information in those pages. and yes the picture of the t-cell receptor is there. sure, a lot of the details are not very prominent (you really have to pay attention to all the cytokines shown in the various diagrams and infer what they do from the picture) but all the information is there. my immunology background was marginal at best, but i felt like first aid did a great job.
i did read hy immunology, but i really don't feel like it added much to my general understanding. it is however a very quick read and if someone is very anxious about the subject then i recommend the book just for the psychological benefit alone. but i discourage people from reading large amounts of material from sheer anxiety... like reading big textbooks about embryology or whatever. it is much better to examine first aid very thoroughly, in my opinion.