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The lamina propria is a thin layer of loose (areolar) connective tissue, which lies beneath the epithelium, and together with the epithelium and basement membrane constitutes the mucosa. As its Latin name indicates, it is a characteristic component of the mucosa, or the mucosa's "own special layer."
Symptoms of COVID-19. Some less common symptoms of COVID-19 can be relatively non-specific; however the most common symptoms are fever, dry cough, and loss of taste and smell. [1] [22] Among those who develop symptoms, approximately one in five may become more seriously ill and have difficulty in breathing.
Illustration of a coronavirus virion in the respiratory mucosa, showing the positions of the four structural proteins and components of the extracellular environment. [15] The M protein is the most abundant protein in coronavirus virions. [8] [5] [4] It is essential for viral replication. [4]
The envelope (E) protein is the smallest and least well-characterized of the four major structural proteins found in coronavirus virions. [2] [3] [4] It is an integral membrane protein less than 110 amino acid residues long; [2] in SARS-CoV-2, the causative agent of Covid-19, the E protein is 75 residues long. [5]
Transmission and life-cycle of SARS-CoV-2 causing COVID-19. Coronaviruses vary significantly in risk factor. Some can kill more than 30% of those infected, such as MERS-CoV, and some are relatively harmless, such as the common cold. [49] Coronaviruses can cause colds with major symptoms, such as fever, and a sore throat from swollen adenoids. [91]
English: Symptoms of coronavirus disease 2019 (COVID-19), the disease seen in the 2019–20 coronavirus outbreak, and is caused by the Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It reflects the symptoms given at Coronavirus disease 2019 (§ Signs and symptoms), with references given there.
The lamina propria, a layer of connective tissue within the mucosa. The muscularis mucosae , a thin layer of smooth muscle . The epithelium, the most exposed part of the mucosa, is a glandular epithelium with many goblet cells .
English: Symptoms of coronavirus disease 2019 (COVID-19), the disease seen in the 2019–20 coronavirus outbreak, and is caused by the Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Español : Síntomas y signos de la enfermedad COVID-19