PPE
2019ncov
biochemistry
cheek
child
children
corona virus
coronavirus
cotton swab
covid19
covid19 disease
covid19 virus
dna
doctor
flat design
genetic research
gloves
healthcare and medicine
human hand
hygiene
icon
illustration
medical exam
medical research
medical sample
medical test
microbiology
molecular structure
nasal swab
nasopharyngeal swab
novel coronavirus
research
respiratory infection
respiratory mucosa
sarscov2
school
science
scientific experiment
scientific sample
symbol