major producers
major product
major product ions
major products
major prognostic factor
major progress
major projects
major proportion
major protein component
major proteins
major psychiatric disorders
major public health concern
major public health implications
major public health issue
major public health problem
major quantitative trait locus
major questions
major reason
major receptor
major reduction

major regions
major regulator
major relevance
major requirement
major resection
major reservoir
major response
major result
major review
major revision
major risk
major risk factor
major river basins
major river systems
major rivers
major role
major route
major safety concerns
major salivary glands
major saponins
major shift

major shortcomings
major side-effects
major side effects
major signaling pathways
major sink
major site
major social
major solute
major source
major species
major step
major storms
major strategy
major strength
major stressors
major stroke
major structural changes
major structural components
major structures
major studies
major subdivisions

major subgroups
major subset
major substrate
major subtypes
major subunits
major sugar
major surgery
major surgical procedures
major symptom
major target
major task
major taxa
major teaching hospital
major technical challenge
major theme
major themes
major theories
major threat
major trading partners
major transcription factors
major transformation

major transition
major trauma
major trends
major tributaries
major trigger
major types
major use
major variables
major variations
major vascular complications
major vascular surgery
major vector
major vegetation types