Lethal dose means you die from it.
hair falls out, gums start to bleed. internal organ failure.
extreme cases, damage similar to heat burns.
Some of the effects on the human body from a nuclear explosion are death (from thermal energy/blast effects or super lethal radiation exposure), infertility and blood disorders.
A photograph of the bones and structure inside a body.
Exposure to asbestos will likely compromise the immune system because of the long-term stress to the body. The test for asbestos exposure does not affect the immune system.
Your body can handle 10ppm (parts per million) for 8 hours. After that you are "hs2 saturated" and you body can't fight it a tenth as well. So to answer your question anything over 10ppm, or anything after 10ppm at 8 hours exposure.
The effects of radiation are dependent on the intensity and duration of exposure. See related links below for effects.
A fever, but not lethal.
Easy Lethal = Killer (mostly) Build = Body Put both together and you get "killer body". You know, like a boxer or a wrestler or a lifeguard. Muscular and toned.
An x-ray is used as a non-invasive way to visualize the inside of your body.
Xray.
LD50/30 radiation refers to the dose of radiation required to kill (LD=Lethal Dose) 50% of the test cohort within 30 days. Its normally specified for a particular species, rats, rabbits etc and is thought to be about 3-4 Sieverts in humans. The wikipedia article "Radiation Poisoning" has a table of effects of increasing radiation on humans. Note that at 3-4 Sv there are no skin effects if it is whole body exposure. If it is localised exposure then there will be radiation burns followed by erythema.
An xray technician certificate allows the bearer to be able to use the diagnostic equipment and take images of the body using the different types of xray equipment available.
It does depend on the type of bacteria or viruses, the spectrum of body reactions to exposure to bacteria and viruses is very large, some of them are actually unimportant of even good for you, we all have colonies of bacteria in our body but they have no effect on our health, so the type of virus or bacteria is the key question