The nature of a protective immune response to HIV is still unclear. Because in a very, very unique manner, unlike virtually any other microbe with which we're familiar, the HIV virus has evolved in a way that the immune system finds it very difficult, if not impossible, to deal with the virus.
Anthony FauciRelated topics
deal impossible microbe nature unique virus way HIVRelated quotes
My algebra was relatively poor. I found it very difficult to use equations that substituted numbers - to which I had a synesthetic and emotional response - for letters, to which I had none. It was because of this that I decided not to continue math at Advanced level, but chose to study history, French and German instead.
Daniel Tammet
No one supposed that dinoflagellates might actively kill fish as an evolved response for their own specific advantage, including a potential nutritional benefit for the algal cells. And yet the dinoflagellates do seem to be killing and eating fishes in a manner suggesting active evolution for this most peculiar reversal.
Stephen Jay Gould
I do not see in what way the face of a man should be a less interesting landscape than any other. A man, the physical person of a man, is a little world, like any other a country, with its towns, and suburbs... As a rule what is needed in a portrait is a great deal of the general, and very little of the particular.
Jean Dubuffet