Experimental syphilis and serological examination for treponematosis in hares.

Of 202 captive hares studied, many of which had lesions on their external genital organs or testicular atrophy or both, 27% had positive serological tests for syphilis although dark-field examination of extracts of atrophic testes was negative. A total of 12 hares that were nonreactive for the serological test for syphilis was inoculated with Treponema pallidum, 9 intratesticularly and 3 intradermally. Six of the animals inoculated intratesticularly exhibited orchitis after 7 days with an associated accumulation of treponemes.

Absorption of colostral immunoglobulins in suckling piglets.

The three portions of the small intestine of 18 neonatal piglets were examined by using the so-called scroll technique evolved by the authors and in cross sections. The chemical constitution and the immunoglobulin content of undigested protein droplets being under absorption were studied. An intensive absorption of immunoglobulins was demonstrated in the body of each cuticulated cylindric epithelial cell of the mucosa covering the jejunum and the proximal two-third of the ileum.