Immunofluorescence for CB₁ in Achilles tendinosis.

<p>Panels show sections of Achilles tendinosis tendons processed for demonstration of CB₁ (<b>a,c,d</b>) and of CB₁ after preabsorption with the immunogenic peptide (<b>b</b>). Numerous tenocytes are seen in low magnification in (<b>a</b>) and (<b>b</b>) (arrows at tenocytes). They show specific immunoreactions in (<b>a</b>) but not in (<b>b</b>). In panel <b>c</b> and <b>d</b> in which the tenocytes are shown in high magnification, punctuate immunoreactions in tenocytes are shown (arrows). Original magnification ×20 (<b>a,b</b>), ×63 (<b>c,d</b>).