Structure and age-dependent development of the turkey liver: a comparative study of a highly selected meat-type and a wild-type turkey line.

In this study the macroscopic and microscopic structure of the liver of a fast growing, meat-type turkey line (British United turkeys BUT Big 6, n=25) and a wild-type turkey line (Wild Canadian turkey, n=48) were compared at the age of 4, 8, 12, 16, and 20 wk. Because the growth plates of long bones were still detectable in the 20-week-old wild-type turkeys, indicating immaturity, a group of 8 wild-type turkeys at the age of 24 wk was included in the original scope of the study. Over the term of the study, the body and liver weights of birds from the meat-type turkey line increased at a faster rate than those of the wild-type turkey line.

Vascular endothelial growth factor receptor 2-specific microbubbles for molecular ultrasound detection of prostate cancer in a rat model.

Objectives: To investigate whether rat prostate cancer can be detected by means of molecular ultrasound (US) using target-specific microbubbles versus a nonspecific contrast agent.

Materials And Methods: A total of 20 Copenhagen rats were randomly examined 75 to 104 days after orthotopic implantation of G-Dunning rat prostatic tumor cells was using a high-end US system and either 1.2 mL/kg of the nonspecific agent A or 0.

Quantitation of angiogenesis and antiangiogenesis in vivo, ex vivo and in vitro - an overview.

Angiogenesis is defined as the sprouting of new capillaries from pre-existing ones. Angiogenesis is a prerequisite for growth and differentiation of organs and tissues and is involved in many pathological processes, for example growth and metastasis of tumours. Numerous in vivo and in vitro models of angiogenesis have been developed in order to identify and analyse pro- and antiangiogenic factors.