From:  Advancing infectious disease research through a chicken embryo model for developmental studies and antimicrobial screening of lipid nanoparticles

 Advantages and limitations of in vivo models.

AdvantagesDisadvantages
Replicate complex organismal interactionsEthical concerns; regulatory approval required
Capture physiological complexity (immune response, metabolism)High maintenance costs and specialized facilities
Enable comprehensive toxicity evaluationInter-species variability limits translational accuracy
Support long-term studiesTime-consuming
Multi-endpoint assessment (behavioral, histopathological, biochemical)Limited throughput for large-scale screening