
doi: 10.1111/ahe.12298
pmid: 28884482
SummaryThe histomorphometric features of umbilical cord constituents in seven foetuses of alpaca (Vicugna pacos) from Cerro de Pasco, Department, Peru, were determined. Sections of 2–5 cm of umbilical cord were fixed in 10% neutral buffered formalin and processed for light microscopy. Standard histological slides stained with haematoxylin and eosin, Masson's trichrome and Van Gieson's trichrome were obtained. Histologically, common features of umbilical artery and vein were observed as well as mucous connective tissue, some cell features that compound this tissue constituted by cells presented features of myofibroblasts. Among most important findings that were observed, the lumen of umbilical vein was obliterated into star‐shaped form with the thinner umbilical artery wall; the smooth muscles and fibroblast were comparatively more in number in umbilical artery than that of umbilical vein, and the tunica media was larger in dimension than the tunica adventitia in umbilical vein. Conclusively, this histological study features an observation of the umbilical cord of alpaca foetuses and shows the similarity between them and those of other mammal species, including dromedaries and South American camelids.
Adventitia, Umbilical Veins, Muscle, Smooth, Fibroblasts, Elastic Tissue, Umbilical Arteries, Umbilical Cord, Methyl Green, Allantois, Pregnancy, Animals, Eosine Yellowish-(YS), Female, Coloring Agents, Hematoxylin, Tunica Media, Azo Compounds, Camelids, New World
Adventitia, Umbilical Veins, Muscle, Smooth, Fibroblasts, Elastic Tissue, Umbilical Arteries, Umbilical Cord, Methyl Green, Allantois, Pregnancy, Animals, Eosine Yellowish-(YS), Female, Coloring Agents, Hematoxylin, Tunica Media, Azo Compounds, Camelids, New World
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 4 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
