Photogram

blood pressure stethoscope medical health blood pressure monitor blood pressure stethoscope medical medical medical medical health health health health health

374

82

vacuum tube electronics gas filled tubes tube gluehkathode component electric electricity switch rectifier piston glass vacuum tube vacuum tube vacuum tube vacuum tube vacuum tube piston

13

1

nixie tube indicator vacuum digit glass electronic display equipment six

2

0

nixie tube indicator vacuum digit glass electronic display equipment one

6

0

sample lab laboratory scientist medical health test science healthcare research tube

20

7

coronavirus virus plasma blood plasma covid-19 infection pathogens

535

154

nixie tube indicator vacuum digit glass electronic display equipment zero

6

0

nixie tube indicator vacuum digit glass electronic display equipment two

3

0

radio tube radio antique old speaker retro vacuum tubes nostalgia music transistor radio radio radio radio radio radio vacuum tubes vacuum tubes

31

3

donation donate plasma donor life biology transfusion give health medical blue health blue medical blue life blue blood

21

4

nixie tube indicator vacuum digit glass electronic display equipment eight nixie indicator indicator eight eight eight eight eight

5

1