Lobation

Lobation is a characteristic of the cell nucleus of certain granulocytes, which are types of white blood cells, where the nucleus is segmented into two or more connected lobes.[1][2] Of the four types of granulocyte only the mast cell is not lobated.

Lobation is also a characteristic of megakaryocytes in the bone marrow.[2]

Lobated white blood cells
Cell type	Image		Lobation
Neutrophil			multilobed, i.e. having more than two lobes
Eosinophil			bi-lobed, i.e. having two lobes
Basophil			bi-lobed [3]

References

Campbell, Neil A. (1996). Biology (4th ed.). Menlo Park [u.a.]: Benjamin Cummings. pp. 832–33. ISBN 0805319409.
Alberts, Bruce (2002). Molecular biology of the cell (4th ed.). New York [u.a.]: Garland. pp. 1284–1290. ISBN 0815340729.
"Basophil". medcell.med.yale.edu.

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[Campbell-1] Campbell, Neil A. (1996). Biology (4th ed.). Menlo Park [u.a.]: Benjamin Cummings. pp. 832–33. ISBN 0805319409.

[Alberts-2] Alberts, Bruce (2002). Molecular biology of the cell (4th ed.). New York [u.a.]: Garland. pp. 1284–1290. ISBN 0815340729.

[Yale-3] "Basophil". medcell.med.yale.edu.