There is a profound distinction between biological material(s) and nuclear material(s). The former are replicating entities (with the exception of toxins) and when introduced into susceptible hosts usually reveal their variable effects after 24 hours. Realistically, evidence of exposure is usually seen in days or weeks (this period is known as the incubation period). For certain pathogens and toxins, real-time detection and identification is not immediate - the minimum time may be 30 minutes. On the contrary, nuclear material(s) is non-replicating and may reveal their effects in a susceptible host immediately upon exposure of the host to the nuclear material. There are methodologies available to detect nuclear material(s) in real-time, unlike for biological material(s).