serological

Serological tests detect antibodies in the blood, indicating prior exposure to a pathogen.血清学检测可检测血液中的抗体，表明先前曾接触过某种病原体。

A large serological survey was conducted to estimate the true extent of infection in the population.进行了一项大型血清学调查，以估计该人群中感染的真实规模。