The effect of qigong for pulmonary function and quality of life in patients with covid-19: A protocol for systematic review and meta-analysis.

Background: Qigong is a traditional Chinese exercise method for health care, keeping fit and getting rid of diseases. It has the advantages of simple operation and few side effects. Corona Virus Disease 2019 (COVID-19) is an acute respiratory infectious disease caused by severe acute respiratory syndrome coronavirus 2(SARS-COV-2).

[Identification of human small supernumerary marker chromosomes and discussion of its research value].

Objective: To identify the origin of human small supernumerary marker chromosomes (sSMCs) using fluorescent in situ hybridization (FISH) combined with G-banding karyotype analysis, and to discuss their mechanisms of formation and research value.

Methods: Cep-FISH and SubcenM-FISH were used to analyze sSMCs in 3 patients for whom the result of G-banding was 47,XN,+mar.

Results: The FISH result of case 1 was 47,XY,+mar.