Test tubes with biomaterial in laboratory are collected in blocks
Hematologist laboratory assistant in glove works with hematological centrifuge
Laboratory assistant works with blood samples on an indication palette
Laboratory assistant holds in his hand cartridge of hematological centrifuge
Doctor inserts labeled tubes into cartridge of hematological centrifuge
Hematologist in glove removes a cartridge from a laboratory centrifuge
Doctor removes test tubes from cartridge of hematological centrifuge
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Child psychology, preschooler doing test with didactic cube
Construction engineer inspecting concrete cube in laboratory of production plant
Girl, child and shapes with block in classroom for studying, knowledge and education for future
Child psychology, preschooler doing test with didactic cube
Boy playing with toy scales in kindergarten
