Two glass tubes with springs

1024 × 711

blue glass tubes in rows

1600 × 1200

Two glass tubes with springs

1280 × 1024

Two glass tubes with springs

1024 × 711

DNA Helix in Test Tubes — Teal

1920 × 1200

Two glass tubes with coils

1280 × 1024

Colorful spiral tubes in glass

1280 × 854

Two glass tubes with springs

1440 × 900

Atomic Model in Glass Sphere

1024 × 800

Glowing Blue Molecular Structure — Scientific

2500 × 1875

abstract white spheres in blue light

1920 × 1408

Glass Rose Sculpture — Blue, Serene

1600 × 1200