The homeotic genes in Drosophila melanogaster are aligned on the chromosome in the order of the body segments that they affect. The genes affecting the more posterior segments repress the more anterior genes. This posterior dominance rule must be qualified in the case of abdominal-A (abd-A) repression by Abdominal-B (Abd-B). Animals lacking Abd-B show ectopic expression of abd-A in the epidermi...

1. The activity of both accessory abducens (Acc Abd) and abducens (Abd) motoneurons (Mns) was recorded in the alert cat during eye retraction and rotational eye movements. Cats were fitted with two scleral coils, one measured rotational eye movements directly and the other retraction by distinguishing the translational component. 2. Acc Abd and Abd Mns were identified following antidromic activ...

RESUMO Uso o relato de ‘Abd al-Raḥmān al-Baghdādī, imã otomano que visitou Brasil (1866-69), como guia para discutir sua pregação a comunidades afro-muçulmanas no país. Esse relato, conhecido há quase três décadas pela historiografia especializada, proporciona uma visão interna da comunidade africana adepta do Islã oitocentista, com detalhes só superados pelos documentos Revolta dos Malês em 18...

Autoimmune blistering dermatoses (ABD) are a group of relatively rare autoantibody-driven diseases affecting primarily skin and/or multiple mucosa. They comprise of two main subdi‐ visions: ABD with autoimmunity to enzymes (dermatitis herpetiformis only) and ABD with autoimmunity to mostly structural proteins (anti-desmosomal autoimmunity circle, antidermal-epidermal junction autoimmunity circl...

Hox genes specify the structures that form along the anteroposterior (AP) axis of bilateria. Within the genome, they often form clusters where, remarkably enough, their position within the clusters reflects the relative positions of the structures they specify along the AP axis. This correspondence between genomic organization and gene expression pattern has been conserved through evolution and...