A permanent L-cell variant cell line (LC1) was isolated by the growth of the parent L-cell line (L) in the presence of a cytostimulatory dose (1:200) of rabbit anti-L-cell antiserum (AL) for 9 mo. LC1 differed from L in many aspects: (a) it was larger (1,533 mm3 vs. 1,284 mm3), (b) it grew faster (1.5- to 2-fold), (c) it grew in aggregated fashion, (d) its growth was no longer stimulated by AL,...

Gewidmet ist diese Arbeit meiner Mutter, die leider die Fertigstellung nicht mehr erleben durfte, und Hannah, die auch heute noch Geduld aufbringt, wenn ihre Mutter am Computer für ihre " Schule " arbeitet.

The incidence of Ureaplasma urealyticum in endourethral swabs was compared with that in first voided urine specimens from 171 male patients. The organism was isolated from the urethras of 72 (42%) and from the urine of 66 (39%). The interval since last voiding urine did not significantly influence the incidence of infection or ureaplasma counts in either type of specimen. Urethritis was strongl...

The efficacy of Levamisole Hydrochloride-a standard immunomodulator was tested in cockerel chicks. Forty day old chicks were allocated into two groups A and B. Group A received Levamisole at the recommended dosage of 10.05mg/20 birds for 3 days prior to the NDV vaccinations (B1, LaSota and Komarov). Group B received all the afore mentioned vaccinations but was not treated with Levamisole. Sera ...

Evidence to support an irnmunostimulafion theory of tumor growth has recently been reviewed by Prehn (1, 2). Basically the immunostimulation theory proposes that both humoral and cellular immune responses can, under certain conditions, facilitate tumor growth by direct effect upon the tumor cells. Enhancement of tumor cell growth, on the other hand, is thought to be due to an enhancing antibody...

We evaluated the oxidative cost paid by birds when coping with an immune challenge. We used the phytohaemagglutinin skin test (PHA) to assess the effects of the T-cell-mediated immune response on the concentration of reactive oxygen metabolites (ROMs), total antioxidant barrier (OXY) and total serum carotenoid concentration in wild nestlings of the Eurasian kestrel (Falco tinnunculus). Immunost...

Six patients (4 male, 2 female) developed nonspecific small bowel ulceration between the ages of 4 months and 76 y. Five had gastrointestinal haemorrhage, usually chronic and resulting in iron deficiency anaemia. Four had features of subacute intestinal obstruction; there were no perforations. A small bowel enema was the most useful single investigation for delineating the lesions, and surgical...