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Calculators for primers, reaction setup and molecular quantities

Laboratory calculations beside molecular-biology utilities

Molecular masses, formulas and isotope distributions

Molecular-biology quantities with visible formulas

IB Biology explanations, experimental-skills guidance, summaries and quizzes.

Convert and filter chemical structure file formats

Search and inspect three-dimensional molecular structures

Explanations of mathematics and fundamental science

Select parts of a scientific model and keep its version, format and attribution together

Validate and convert coded measurement-unit expressions

Taxonomic lookup for plants, animals, fungi and microbes

A maintained catalogue of marine taxonomic names

Fish reference lookup by common or scientific name

Animal reference searchable by information and media type

Human-protein information across tissues and biological contexts

Curated pathways with visualization and analysis tools

Science stories with cultural and human context

Amphibian reference with species and geography searches

Classification and names for organisms in sequence databases

A biological-data resource portal from SIB