stool

(noun)

Feces; excrement.

Related Terms

Examples of stool in the following topics:

  • Amoebic Dysentery (Amoebiasis)

    • The infective cysts are passed via infected stool.
    • Interestingly, individuals can be asymptomatic if infected with trophozoites and can function as carriers by passing cysts in their stool.
    • Symptoms of individuals infected with Entamoeba histolytica include ulcers, abdominal cramps, diarrhea, bloody stools, liquid stools, fever and vomiting.

  • Cyclospora Diarrheal Infection

    • The symptoms range from watery, loose stool, weight loss, cramping, fatigue, vomiting, fever and nausea.
    • Cyclosporiasis (Cyclospora cayetanesis) When freshly passed in stools, the oocyst is not infective (1) (thus, direct fecal-oral transmission cannot occur; this differentiates Cyclospora from another important coccidian parasite, Cryptosporidium).
    • Inside the cells they undergo asexual multiplication and sexual development to mature into oocysts, which will be shed in stools (7).
    • A photomicrograph of oocysts from Cyclospora cayetanensis derived from a fresh stool sample.

  • Giardiasis

    • Once the parasites move towards the colon, the encystation phase occurs and the cysts are infectious when passed in the stool .
    • The symptoms include from fever, diarrhea, hematuria, stomach cramping, vomiting, flatulence, and loose stool.

  • Bacterial Gastroenteritis

    • However, stool cultures should be performed in those with blood in the stool, those who might have been exposed to food poisoning, and those who have recently traveled to the developing world.

  • Typhoid Fever

    • Diagnosis is made by any blood, bone marrow or stool cultures and with the Widal test (demonstration of salmonella antibodies against antigens O-somatic and H-flagellar).
    • In epidemics and less wealthy countries, after excluding malaria, dysentery or pneumonia, a therapeutic trial time with chloramphenicol is generally undertaken while awaiting the results of the Widal test, and cultures of the blood and stool.

  • Unclassified and Uncultured Bacteria

    • Often these techniques are designed for specific specimens; for example, a sputum sample will be treated to identify organisms that cause pneumonia, while stool specimens are cultured on selective media to identify organisms that cause diarrhoea while preventing growth of non-pathogenic bacteria.

  • Characteristics of Helminths

    • However, heavy symptoms include frequent, painful passage of stool that contains mucus, water, and blood.

  • Pathogenic Escherichia coli

    • In stool samples, microscopy will show Gram-negative rods, with no particular cell arrangement.

  • Viral Genomes in Nature

    • Subsequent studies showed that there are more than a thousand viral species in human stool and possibly a million different viruses per kilogram of marine sediment, including many bacteriophages.