1 These are Ingredient-Strength combinations (e.g. Acetaminophen 250 MG). For details, download the source code for building DRUG_STRENGTH.  If you only want to use this table for drug and ingredient concepts that are valid (where the field INVALID_REASON is null), the DRUG_STRENGTH records can be used as such.
DEFINITION of 'Botnet'. A network of internet-connected devices that have been compromised by hackers without the knowledge of the legitimate owners.
Botnets of zombie computers are often used to spread e-mail spam and launch denial-of-service attacks (DOS attacks). Most owners of zombie computers are unaware that their system is being used in this way. Because the owner tends to be unaware, these computers are metaphorically compared to fictional zombies.