Portrait of the lemur Lepilemur otto, a species first described in Craul et al. 2007 BMC Evolutionary Biology. “Unexpected species diversity of Malagasy primates (Lepilemur spp.) in the same biogeographical zone: a morphological and molecular approach with the description of two new species”

Embryonic stages of the bat M. schreibersii fuliginosus. From Wang et al. 2010 BMC Developmental Biology “A comparative study of prenatal development in Miniopterus schreibersii fuliginosus, Hipposideros armiger and H. pratti”

Flower structures of Incarvillea mairei and pollinator behavior. From Ai et al. 2013 BMC Plant Biology “The reproductive strategy of a pollinator-limited Himalayan plant, Incarvillea mairei”

Ground plan of wing patterns in Nymphalinae butterflies. From Suzuki et al. 2014 BMC Evolutionary Biology “Gradual and contingent evolutionary emergence of leaf mimicry in butterfly wing patterns”

Myelination in the zi/zi rat hindbrain. From Sakakibara et al. 2008 BMC Neuroscience “Non-cell autonomous impairment of oligodendrocyte differentiation precedes CNS degeneration in the Zitter rat: Implications of macrophage/microglial activation in the pathogenesis”

Normal radiographic anatomy of the head of the green iguana. From Banzato et al. 2012 BMC Veterinary Research “Comparative evaluation of the cadaveric, radiographic and computed tomographic anatomy of the heads of green iguana (Iguana iguana), common tegu (Tupinambis merianae) and bearded dragon (Pogona vitticeps)”

Effect of a strong electric field on a lipid bilayer. From Tieleman 2004 BMC Biochemistry “The molecular basis of electroporation”

Figure generated by the software package Chimera. From Smith et al. 2012 BMC Structural Biology “Protein Nano-Object Integrator (ProNOI) for generating atomic style objects for molecular modeling”

Multiple views from a single scan of a 7-day post-hatching paddlefish. From Metscher 2009 BMC Physiology “MicroCT for comparative morphology: simple staining methods allow high-contrast 3D imaging of diverse non-mineralized animal tissues”

Views of the heads of larvae of various net-spinning caddisflies. From Ruiter et al. 2013 BMC Ecology “DNA barcoding facilitates associations and diagnoses for Trichoptera larvae of the Churchill (Manitoba, Canada) area”

Scanning electron microscopy images of floral buds six, seven and eight days after floral initiation. From Xiao et al. 2009 BMC Plant Biology “Integration of tomato reproductive developmental landmarks and expression profiles, and the effect of SUN on fruit shape”

Cx43 immunoreactivity in brain slice culture injected with GL15 glioma cells. From Oliveria et al. 2005 BMC Cell Biology “Contribution of gap junctional communication between tumor cells and astroglia to the invasion of the brain parenchyma by human glioblastomas”

Iris phenotypes in aging mice with normal and mutant phenotypes. From Anderson et al. 2001 BMC Genetics “Genetic modification of glaucoma associated phenotypes between AKXD-28/Ty and DBA/2J mice”

Mouse embryos, one a wild type, the other a mutant with severe edema visible along its back. From Schneider et al. 2004 BMC Developmental Biology “Identification of cardiac malformations in mice lacking Ptdsr using a novel high-throughput magnetic resonance imaging technique”

Snowflake, the only known albino gorilla. From Prado-Martinez et al. 2013 BMC Genomics “The genome sequencing of an albino Western lowland gorilla reveals inbreeding in the wild”