The diagnosis of dengue fever may be confirmed by microbiological laboratory testing. PHE laboratories provide an extensive range of microbiological diagnostic tests. Fluid may be sent for biochemical, microbiological, and cytological analysis. Microbiological and epidemiological data indicates that clothing and household linens etc. Food may be accidentally or deliberately contaminated by microbiological, chemical or physical hazards. MALDI/TOF is becoming a standard method for species identification in medical microbiological laboratories. Some wastes contain chemicals capable of suppressing microbiological growth or activity. HMP has conducted geological, hydrological, botanical, and microbiological studies in this harsh environment since 1997. "Histoplasma" organisms can sometimes be demonstrated within the granulomas by biopsy or microbiological cultures. Namely these are&colon; ozone oxidation reactions, nuclear radiation, UV damage, and microbiological, fungus growth. A related area is the use of swabs for microbiological environmental monitoring. Empirical therapy may be appropriate if local microbiological surveillance is efficient. The causative agent is determined in only 15% of cases with routine microbiological tests. Mirex is highly resistant to microbiological degradation. Formaldehyde fumigation has long been an accepted method for areas where microbiological cleanliness is required.