The immune system may be seen as a complex system, characterized using tools developed in the study of such systems, for example, surface roughness and its associated Hurst exponent. We analyze densitometric (Panama blot) profiles of immune reactivity, to classify individuals into groups with...

The vertebrate immune system is a wonder of modern evolution. Occasionally, however, correlations within the immune system lead to inappropriate recruitment of pre-existing T-cells against novel viral diseases. We present a random energy theory for the correlations in the naive and memory T-cell...

In this paper we use exact numeration techniques and multispin coding to study the dynamics of a bit-string model proposed to describe the time evolution of B-cell repertoire. Each clone of B-cells and antibodies is characterized by its molecular receptor, associated to a bit-string, and the...