Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Variation of ommatidia number as a function of worker size inCamponotus pennsylvanicus (DeGeer) (Hymenoptera: Formicidae) (1992)
    Springer
    Insectes sociaux 39 (1992), S. 233-236 
    Details
    ISSN: 1420-9098
    Keywords: Camponotus pennsylvanicus ; compound eye ; ommatidia number ; Polymorphism ; caste development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The relation of worker size to ommatidia number was examined in the polymorphic antCamponotus pennsylvanicus (DeGeer). Linear regression described this relationship as:Y = 260.9 + 113.6×; whereYis ommatidia number andX is head width. A log-log regression described this relationship as:Y = 323.5 + 286.9*logX(r 2 = 0.98). This analysis indicated an allometric relation of ommatidia number to head width, where ommatidia numbers increase at a slower rate than head width. This relationship is discussed in terms of ethotypes associated with worker morphotypes, and the possible mechanisms regulating polymorphic development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01249297
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Red Photoreceptor in Butterflies (1971)
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 126-127 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] From a behavioural standpoint, the responsiveness of H. erato to various colours is a labile characteristic2. Although the butterflies respond to red in courtship, they have a spontaneous preference for yellow in feeding behaviour, for example. It is also known that the close relative, H. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/231126a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Differential effect of asparaginase on lymphocyte subpopulations and alleviation of the immunosuppression by lipopolysaccharide (1976)
    Springer
    Cancer immunology immunotherapy 1 (1976), S. 205-209 
    Details
    ISSN: 1432-0851
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of a range of E. coli L-asparaginase (EC2) concentrations on mouse splenocyte blastogenesis was examined at various concentrations of both T- and B-lymphocyte mitogens. At optimal mitogen concentration and with 0.1 unit EC2/ml inhibition of the Con A (T cell) response was 2.5 times as great as inhibition of the LPS (B cell) response. Another T-cell stimulant, periodate, was inhibited in a manner comparable to Con A while the PHA response was inhibited to an intermediate degree. In vivo the PFC response was suppressed to 19% of normal when 100 units EC2 was given with SRBC. However, when T-cell participation in this response was by-passed by simultaneously giving LPS, the residual activity rose from 19% to 52%, again suggesting that T-lymphocytes were the more severely depressed population. These observations demonstrate that a nonspecific stimulant of the immune system may alleviate the depression of immune responsiveness induced by a chemotherapeutic agent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00200094
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...