Jennifer L. Wittmeyer

Works (5)

Updated: July 5th, 2023 15:57

2007 journal article

Soft tissue and cellular preservation in vertebrate skeletal elements from the Cretaceous to the present

PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 274(1607), 183–197.

By: M. Schweitzer n , J. Wittmeyer n & J. Horner *

author keywords: dinosaur; soft tissues; red blood cells; osteocytes; vessels; preservation
MeSH headings : Animals; Birds / anatomy & histology; Blood Vessels / cytology; Bone Demineralization Technique; Bone and Bones / blood supply; Bone and Bones / cytology; Dinosaurs / anatomy & histology; Fossils; Mammals / anatomy & histology; Paleontology / methods
TL;DR: The results suggest that present models of fossilization processes may be incomplete and that soft tissue elements may be more commonly preserved, even in older specimens, than previously thought. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

Gender-specific reproductive tissue in ratites and Tyrannosaurus rex

SCIENCE, 308(5727), 1456–1460.

By: M. Schweitzer n , J. Wittmeyer n & . Horner  n

MeSH headings : Animals; Bone and Bones / anatomy & histology; Bone and Bones / ultrastructure; Chickens / anatomy & histology; Dinosaurs / anatomy & histology; Dromaiidae / anatomy & histology; Female; Femur / anatomy & histology; Male; Palaeognathae / anatomy & histology; Reproduction; Sex Characteristics; Sex Determination Analysis; Struthioniformes / anatomy & histology
TL;DR: The presence of endosteally derived bone tissues lining the interior marrow cavities of portions of Tyrannosaurus rex hindlimb elements are reported, and it is hypothesized that these tissues are homologous to specialized avian tissues known as medullary bone. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

Preservation of bone collagen from the late cretaceous period studied by immunological techniques and atomic force microscopy

LANGMUIR, 21(8), 3584–3590.

By: R. Avci  n, M. Schweitzer n , R. Boyd  n, J. Wittmeyer n, F. Arce n & J. Calvo  n

MeSH headings : Animals; Argentina; Binding Sites; Birds; Bone and Bones / chemistry; Bone and Bones / ultrastructure; Collagen / chemistry; Collagen / immunology; Collagenases / metabolism; Fossils; Immunohistochemistry / methods; Microscopy, Atomic Force / methods; Paleontology
TL;DR: Collagen pull-off measurements not only support immunochemical evidence for collagen preservation for antibody recognition but also imply preservation of the whole molecular integrity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

Soft-tissue vessels and cellular preservation in Tyrannosaurus rex

SCIENCE, 307(5717), 1952–1955.

By: M. Schweitzer n , J. Wittmeyer n, . Horner  n & J. Toporski*

MeSH headings : Animals; Blood Vessels / anatomy & histology; Blood Vessels / cytology; Bone Demineralization Technique; Bone Matrix; Bone and Bones / anatomy & histology; Bone and Bones / blood supply; Bone and Bones / cytology; Cell Separation; DNA / analysis; Dinosaurs / anatomy & histology; Elasticity; Femur / anatomy & histology; Femur / blood supply; Fossils; Microscopy, Electron, Scanning; Montana; Osteocytes / cytology; Osteocytes / ultrastructure; Time
TL;DR: Soft tissues are preserved within hindlimb elements of Tyrannosaurus rex and removal of the mineral phase reveals transparent, flexible, hollow blood vessels containing small round microstructures that can be expressed from the vessels into solution. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2004 journal article

Comparison of antibody-antigen interactions on collagen measured by conventional immunological techniques and atomic force microscopy

LANGMUIR, 20(25), 11053–11063.

By: R. Avci  n, M. Schweitzer n , R. Boyd  n, J. Wittmeyer n, A. Steele  n, J. Toporski n, W. Beech  n, F. Arce n ...

MeSH headings : Air; Animals; Antigen-Antibody Reactions / immunology; Antigen-Antibody Reactions / physiology; Chickens; Collagen / chemistry; Enzyme-Linked Immunosorbent Assay; Immunologic Techniques; Microscopy, Atomic Force / methods; Particle Size; Surface Properties
TL;DR: The repeated localization and measurement of unbinding forces associated with antibody--antigen (ab--ag) interactions are demonstrated, by applying AFM in air and in liquid to visualize and measure polyclonal ab--ag interactions, using chicken collagen as a model system. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

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