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The term thrombocyte (clot cell) came into use in the early 1900s and is sometimes used as a synonym for platelet; but not generally in the scientific literature, except as a root word for other terms related to platelets (e.g. thrombocytopenia meaning low platelets).
Thrombosis (from Ancient Greek θρόμβωσις (thrómbōsis) ' clotting ') is the formation of a blood clot inside a blood vessel, obstructing the flow of blood through the circulatory system.
Heinz body stain of feline blood, showing three distinct Heinz bodies. Heinz bodies appear as small round inclusions within the red cell body, though they are not visible when stained with Romanowsky dyes.
Horizontal cells are the laterally interconnecting neurons having cell bodies in the inner nuclear layer of the retina of vertebrate eyes. They help integrate and regulate the input from multiple photoreceptor cells.
Head of Polistes with two compound eyes and three ocelli (circled). A simple eye or ocellus (sometimes called a pigment pit [1] [2]) is a form of eye or an optical arrangement which has a single lens without the sort of elaborate retina that occurs in most vertebrates.
Hematopoietic stem cells (HSCs) are the stem cells [1] that give rise to other blood cells.This process is called haematopoiesis. [2] In vertebrates, the first definitive HSCs arise from the ventral endothelial wall of the embryonic aorta within the (midgestational) aorta-gonad-mesonephros region, through a process known as endothelial-to-hematopoietic transition.
The Purkinje layer of the cerebellum, which contains the cell bodies of the Purkinje cells and Bergmann glia, express a large number of unique genes. [9] Purkinje-specific gene markers were also proposed by comparing the transcriptome of Purkinje-deficient mice with that of wild-type mice. [10]
The billfish are a group (Xiphioidea) of saltwater predatory fish characterised by prominent pointed bills (), and by their large size; some are longer than 4 m (13 ft).). Extant billfish include sailfish and marlin, which make up the family Istiophoridae; and swordfish, sole member of the family Xiph