Resistance of Hookworm Larvae

Studies on hookworm larvae. V. Further observations of infective larvae in migration towards vegetables.

In the report III (1954) of this series, I reported the experimental results of some investigations carried out during the summer season from July to August 1952-1953. Through these former investigations, I came to understand many points of the migration towards vegetables of the hookworm larvae. However it was unexpected that most of them were easily destroyed by the sun's rays after migration...

Cryopreservation of sheathed third-stage larvae of Gaigeria pachyscelis (Sandveld hookworm).

A technique for the cryopreservation of third stage larvae of Gaigeria pachyscelis is described. It consists of incubating sheathed third-stage larvae in 80% (v/v) ethylene glycol as a cryoprotectant for 30 s at 0 degrees C, prior to transfer into liquid nitrogen. The survival rate, as assessed by motility, was 37.6% after 30 d cryopreservation. A sheep infected percutaneously with 700 live cry...

Transgenic C. elegans Dauer Larvae Expressing Hookworm Phospho Null DAF-16/FoxO Exit Dauer

Parasitic hookworms and the free-living model nematode Caenorhabtidis elegans share a developmental arrested stage, called the dauer stage in C. elegans and the infective third-stage larva (L3) in hookworms. One of the key transcription factors that regulate entrance to and exit from developmental arrest is the forkhead transcription factor DAF-16/FoxO. During the dauer stage, DAF-16 is activat...

Detection of Hookworm Eggs

IN the routine examination of stools for hookworm eggs the work of the .Rockefeller International Health Board has proved that the centrifuge increases the positive findings by just over ten per cent. This has been proved independently by the workers in Trinidad and in British Guiana their results being, curiously enough, identical within one place of decimals. It is obvious on consideration th...

Hookworm Infection