The objective of this study was to determine whether host, compartment, or environmental
specific factors play an important role in the establishment of the intestinal microflora in broiler …

Toxocara seroprevalence and the relation between Toxocara seroprevalence and allergic
asthma were investigated in Dutch schoolchildren aged 4–6 years. Data on Toxocara …

Dogs and humans have lived together in a close association for more than ten thousand
years (see Chapter 1). Worms in dogs have always been apparent and often assumed to be …

… Knapen F van. Toxoplasmosis, old stories and new facts. Int Ophtalmol 1989; 13: 371-5. …
Ruitenberg EJ, and Knapen F van. The enzyme linked immuno sorbent assay and its …

… Druten H van, Knapen F van, Reintjes A. Epidemiologic implications of limited duration
seropositivity after toxoplasma infection. Am 1 Epidemiol 132: 169-80, 1990. …

Hughes HPA and van Knapen F. 1982. Characteristics of a secretory antigen from
Toxoplasma gondii and its role in circulating antigen production. International Journal for …

Discussed are the outlines of a risk assessment‐based system of meat safety assurance to
replace the current meat inspection. An example of a system that uses the Hazard Analysis of …

A brief account is given of the International Workshop on Trichinella spiralis antigens held in
Bilthoven, Netherlands, 26-27 August 1990. A table lists the size and distribution of antigens …

The development of a polymerase chain reaction (PCR) based fingerprinting method for the
characterization of Giardia duodenalis isolates is described. The method uses three different …

… Ruitenberg EJ, Knapen F van (1977). The enzyme linked immunosorbent assay and its
application to parasitic infections. J Infect Dis 136:267-273 Ruitenberg EJ, Panggabean SO, …