Handheld tracking shot of unrecognizable female teacher handing out tests to middle school children in face masks sitting at desks in classroom
Microbiological laboratory work with tests
Microbiology laboratory work with tests
Lab technician working on tests
Microbiology laboratory work with tests
Microbiological laboratory work with tests
Lab technician working on tests
Microbiology laboratory work with tests
Portrait of a schoolboy standing on the street near school holding tests in his hands and carrying a backpack. Male pupil looking at the camera holding tests and smiling
Teacher giving tests to student in protective medical masks, groupmates passing sheets to each other at classroom
