Species specificity, as a biological process, refers to the selective interaction, compatibility, or functional activity of biological molecules, cells, or pathogens with organisms of particular species, arising from co-evolved structural and regulatory determinants. It encompasses mechanisms such as species-restricted receptor–ligand recognition, host-range determinants in pathogens, species-dependent expression or sequence variants of target proteins, and immune recognition constraints that limit cross-species functionality. Species specificity thus governs processes like host tropism, cross-species transmission barriers, xenogeneic incompatibilities, and the species-selective efficacy or toxicity of biomolecules, ultimately shaping interspecies boundaries in infection, signaling, and physiological regulation.
Why does your dog rush to "help" when you are searching for something, while your cat seems… eh, less concerned? New research suggests that this difference may stem from deep evolutionary roots—and that, in certain situations, ...
Evolution
Feb 26, 2026
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211
Industrial yeasts are a powerhouse of protein production, used to manufacture vaccines, biopharmaceuticals, and other useful compounds. In a new study, MIT chemical engineers have harnessed artificial intelligence to optimize ...
Biotechnology
Feb 17, 2026
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72
Researchers from The Universities of Manchester and Birmingham have identified the exact nerve cells in the brain that drive important behavioral changes in female fruit flies after they mate. The discovery, published in ...
Plants & Animals
Feb 10, 2026
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25
For flowering plants, reproduction is a question of the birds and the bees. Attracting the right pollinator can be a matter of survival—and new research shows how flowers do it is more intriguing than anyone realized, and ...
Evolution
Jan 27, 2026
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45
Understanding human gene function in living organisms has long been hampered by fundamental differences between species. Although mice share most protein-coding genes with humans, their regulatory landscapes often diverge, ...
Biotechnology
Jan 17, 2026
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123
One of the great mysteries in plant biology is how, given the clouds of pollen released by dozens of plant species all at the same time, an individual plant can recognize which particular species' pollen grains will induce ...
Molecular & Computational biology
Nov 21, 2025
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164
In a recent study, scientists from the Texas A&M College of Veterinary Medicine and Biomedical Sciences (VMBS) have utilized cutting-edge artificial intelligence methods to identify a region of the X chromosome that has maintained ...
Plants & Animals
Nov 12, 2025
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56
Ants have evolved an acute sense of smell, which requires each sensory neuron to choose one scent receptor out of hundreds. In a new study published in Nature, researchers at New York University have discovered what ants ...
Evolution
Oct 22, 2025
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30
Despite their fundamental differences, plants, animals, and fungi share certain metabolic processes. Biologists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have discovered that a unique protein ...
Molecular & Computational biology
Sep 16, 2025
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97
Researchers have found a new enzyme, taken from Flavobacterium akiainvivens, that has a much broader specificity than the current leading alternatives.
Cell & Microbiology
Aug 29, 2025
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