In 1868, Ernst Neumann recognized that blood cells re quire continuous replenishment during postnata1life. Before him, the assumption was that cells of the blood, like nerves once formed in the embryo, remain in the body throughout life. Neumann also recognized that this process occurred within the bone marrow, because this tissue provided a fa vorable environment for proliferation and differentiation of blood cell precursors. Vera Danchakoff, the Russian embryologist working in the US, in 1916 made an analogy to the soil and the seed. Bone marrow forms the soil, providing a favorable environment for the growth of seed, the hemopoietic stem cell, and other progenitor cells. Imagine in the remote past a heap of similar tree seeds. These seeds develop in our moderate climate into a tall and many branched tree. Suppose the wind bears a part of the seeds away and brings them to a land possessing different environmental conditions, we will say the arc tic lands. There the seeds may develop but they may pro duce trees no higher than our moss.
Die Inhaltsangabe kann sich auf eine andere Ausgabe dieses Titels beziehen.
Anbieter: Prior Books Ltd, Cheltenham, Vereinigtes Königreich
Hardcover. Zustand: Very Good. Zustand des Schutzumschlags: Very Good. First Edition. Publisher's red hardback in better than very good condition: firm and square, strong joints. Complete with original dustjacket, not showing any tears or chips. Contents tight and clean; no pen-marks. Not from a library so no such stamps or labels. Thus a tidy book in very presentable condition.Publisher's hardback in very good condition: firm and square, strong joints, just mildly rubbed. Complete with original dustjacket: slightly edge-worn and a little darkened, even so still showing well. Contents tight and clean; no pen-marks. Not from a library so no such stamps or labels. Thus a tidy book in presentable condition. Bestandsnummer des Verkäufers 212037
Anzahl: 1 verfügbar
Anbieter: Basi6 International, Irving, TX, USA
Zustand: Brand New. New. US edition. Expediting shipping for all USA and Europe orders excluding PO Box. Excellent Customer Service. Bestandsnummer des Verkäufers ABEOCT25-132823
Anbieter: Romtrade Corp., STERLING HEIGHTS, MI, USA
Zustand: New. This is a Brand-new US Edition. This Item may be shipped from US or any other country as we have multiple locations worldwide. Bestandsnummer des Verkäufers ABBB-163767
Anbieter: Books Puddle, Woodside, NY, USA
Zustand: Used. pp. 482. Bestandsnummer des Verkäufers 262572018
Anzahl: 1 verfügbar
Anbieter: Majestic Books, Hounslow, Vereinigtes Königreich
Zustand: Used. pp. 482 52:B&W 6.14 x 9.21in or 234 x 156mm (Royal 8vo) Case Laminate on White w/Gloss Lam. Bestandsnummer des Verkäufers 5275949
Anzahl: 1 verfügbar
Anbieter: Biblios, Frankfurt am main, HESSE, Deutschland
Zustand: Used. pp. 482. Bestandsnummer des Verkäufers 182572024
Anzahl: 1 verfügbar
Anbieter: moluna, Greven, Deutschland
Gebunden. Zustand: New. Bestandsnummer des Verkäufers 458445990
Anzahl: Mehr als 20 verfügbar
Anbieter: Kennys Bookshop and Art Galleries Ltd., Galway, GY, Irland
Zustand: New. Series: Contemporary Biomedicine. Num Pages: 454 pages, biography. BIC Classification: PSF; TCB. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly; (UU) Undergraduate. Dimension: 234 x 156 x 26. Weight in Grams: 1870. . 1989. Hardback. . . . . Bestandsnummer des Verkäufers V9780896031470
Anzahl: 15 verfügbar
Anbieter: GreatBookPrices, Columbia, MD, USA
Zustand: New. Bestandsnummer des Verkäufers 8138595-n
Anzahl: 15 verfügbar
Anbieter: BennettBooksLtd, Los Angeles, CA, USA
Hardcover. Zustand: New. In shrink wrap. Looks like an interesting title! Bestandsnummer des Verkäufers Q-0896031470
Anzahl: 1 verfügbar