The structure and relations of the mesoglea, muscle-fibres, aitd cell layers were examined by several histological techniques. Evidence is given that the muscle-fibres represent specializations of the mesogleal substance, and they are therefore referred to as mesogleal fibres. The longitudinal fibrous system is regularly demonstrable in the body of the animal and the circular system in its tent...

IARC Scientific Publications No. 140 Mechanisms of Fibre Carcinogenesis Edited by A.B. Kane, P. Boffetta, R. Saracci and J.D. Wilbourn CONTENTS List of participants Consensus report Mechanisms of mineral fibre carcinogenesis A.B. Kane Use of physico-chemical and cell-free assays to evaluate the potential carcinogenicity of fibres B. Fubini Use of in-vitro genotoxicity and cell transformation as...

This is the first of three papers on the application of enzyme histochemical techniques to the study of developing and diseased muscle. This paper will deal with developing muscle in various laboratory animals, the second with developing human muscle, and the third with hereditary neurogenic atrophies in infancy and childhood. In 1678 Stefano Lorenzini had already observed that animal muscle co...

Dye coupling between the cone-shaped radial muscle fibres, which control the expansion and closing of a squid chromatophore organ, was investigated in the squid Loligo vulgaris. Particular attention was paid to the role of the myomuscular junctions located between the muscle fibres. Lucifer Yellow was injected ionophoretically into single muscle fibres under normal artificial sea water (ASW) an...

Figure 2: Formation of a polypeptide by reaction of amino acids. (R , R and R may be the same or different 1 2 3 side groups). These contaminants are removed during processing. Clean wool, together with other animal fibres, belongs to a group of proteins known as keratins. Unlike cotton and the majority of synthetic fibres, wool does not have a homogeneous structure. Wool fibres have highly com...

BACKGROUND AND AIMS Environmental exposures to chrysotile and tremolite from the soil cause pleural plaques and mesothelioma in northeast Corsica. Goats grazing in the contaminated areas inhale asbestos fibres. We used this natural animal model to study whether these exposures actually result in increased fibre burdens in the lungs and parietal pleura. METHODS Ten goats from areas with asbest...

Figure 2: Formation of a polypeptide by reaction of amino acids. (R , R and R may be the same or different 1 2 3 side groups). These contaminants are removed during processing. Clean wool, together with other animal fibres, belongs to a group of proteins known as keratins. Unlike cotton and the majority of synthetic fibres, wool does not have a homogeneous structure. Wool fibres have highly com...