Sedimentation in parasitological coproscopy
Rev. Inst. Med. Trop. Säo Paulo
;
34(3): 255-8, maio-jun. 1992. tab
Article
Dans Anglais
| LILACS
| ID: lil-134514
ABSTRACT
A sedimentation technique is described, in which a fecal suspension is placed on top of an aqueous sucrose solution of specific gravity 1.015 g/cm3. Using 100 by 15 mm test tubes, duplicate gravity sedimentation experiments were made using homogenized fecal suspensions (single-columns) and fecal suspensions placed on top of clear columns (double-columns). Egg and cyst counts, and turbidity determinations were made in the sediments obtained after definite time intervals. Most Ascaris lumbricoides, Trichuris trichiura and Ancylostomidae eggs sedimented within 20 minutes in single-and between 30 and 60 minutes in double-columns. Giardia duodenalis cysts required longer periods to sediment in double-than in single-columns; after 180 minutes (the maximum period of observation), double-column sediments produced 60.0% of the counts of single-columns. Double-column sediments were consistently less turbid than single-column ones
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Numération des oeufs de parasites
/
Ancylostomatoidea
/
Trichuris
/
Ascaris lombricoides
/
Fèces
/
Giardia
Limites du sujet:
Animaux
/
Humains
langue:
Anglais
Texte intégral:
Rev. Inst. Med. Trop. Säo Paulo
Thème du journal:
Médecine tropicale
Année:
1992
Type:
Article
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS