Gills consist of threadlike structures called filaments. Gills are tissues which consist of threadlike structures called filaments. The eukaryotic cytoskeleton is composed of microfilaments, intermediate filaments and microtubules. Adherens junctions share the characteristic of anchoring cells through their cytoplasmic actin filaments. Streptophyte algae are either unicellular or form multicellular filaments, branched or unbranched. Armadillo proteins are involved in mediating attachment to intracellular filaments and cell membrane proteins. These protein complexes link cadherins to actin filaments. Stereocilia are composed of cytoplasm with embedded bundles of cross-linked actin filaments. Actin filaments and secretion -the macrophage model. Gills are specialized organs containing filaments, which further divide into lamellae. ATP binds to the cross bridges between myosin heads and actin filaments. The larvae are cylindrical in shape with dorsal projections that are smooth with filaments. Each gill has a main axis with many lateral filaments or lamellae that are vascularized. P. Two ions bind to troponin C on the actin filaments. Neurofibrillary tangles are composed of paired helical filaments (PHF).