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Exocrine glands contain a glandular portion and a duct portion, the structures of which can be used to classify the gland. [1]The duct portion may be branched (called compound) or unbranched (called simple).
Echovirus is a polyphyletic group of viruses associated with enteric disease in humans. The name is derived from "enteric cytopathic human orphan virus".These viruses were originally not associated with disease, but many have since been identified as disease-causing agents.
The first animal virus discovered (1897) was the foot-and-mouth disease virus (FMDV). It is the prototypic member of the genus Aphthovirus in the Picornaviridae family. [5] The plaque assay was developed using poliovirus; the discovery of viral replication in culture was also with poliovirus in 1949.
Coxsackieviruses are divided into group A and group B viruses based on early observations of their pathogenicity in neonatal mice. [1] Group A coxsackieviruses were noted to cause a flaccid paralysis (which was caused by generalized myositis) while group B coxsackieviruses were noted to cause a spastic paralysis (due to focal muscle injury and degeneration of neuronal tissue).
The endocrine system [1] is a messenger system in an organism comprising feedback loops of hormones that are released by internal glands directly into the circulatory system and that target and regulate distant organs.
Adenovirus infection is a contagious viral disease, caused by adenoviruses, commonly resulting in a respiratory tract infection. [1] [9] Typical symptoms range from those of a common cold, such as nasal congestion, rhinitis, and cough, to difficulty breathing as in pneumonia. [9]
Orthomyxoviridae (from Ancient Greek ὀρθός (orthós) 'straight' and μύξα (mýxa) 'mucus') [1] is a family of negative-sense RNA viruses.It includes seven genera: Alphainfluenzavirus, Betainfluenzavirus, Gammainfluenzavirus, Deltainfluenzavirus, Isavirus, Thogotovirus, and Quaranjavirus.
Omsk hemorrhagic fever is caused by Omsk hemorrhagic fever virus (OHFV), a member of the Flavivirus family. The current species name is Orthoflavivirus omskense [4] according to International Committee on Taxonomy of Viruses taxonomy standards. The virus was discovered by Mikhail Chumakov and his colleagues between 1945 and 1947 in Omsk, Russia.