Sequence of development of the tissues can be clearly seen in which microscope slide preparation made from root of a bean seedling? A. Squash preparation of the terminal 3 mm. B. teased out macerated tissue of terminus IN mm. C. transverse section through the root hair region D. longitudinal section
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The microscope is an essential in-strument for modern biological stud-ies in schools, colleges and universi-ties. The well prepared microscopeslide is a most important means ofdemonstration which can be exam-ined at different magnifications sothat increasing amount of detail canbe resolved. In this sense it is inex-haustible.LIEDER PREMIUM PREPAREDMICROSCOPE SLIDES are madein our laboratories in Ludwigsburg/Germany under rigourous scientificcontrol. They are the product of long experience combined with the most up to datetechniques.The prerequisite for excellent preparations is good material, well preserved and fixedso that the finer structures are retained in as life-like a way as possible. Microtomesections are cut from this material by our highly skilled and experienced staff. Theyare of a thickness which will finally result in slides from which the maximum reso-lution of the structural components can be obtained.Particular attention is paid to the staining technique and in each case the selectedmethod for a particular specimen will ensure the best possible differentiation com-bined with clear definition and permanency of staining.LIEDER prepared microscope slides are delivered on best glasses with fine groundedges of the size 26 x 76 mm (1'’ x 3'’) and are mailed in solid boxes of different sizesand prices. Further information is available in the enclosed price-list.The procurement and processing of the original material for some preparations pre-sents special problems. For this reason, these preparations can often only be manufac-tured in small quantities entailing a longer delivery period. This applies particularlyto the preparations marked with an asterisk * in the catalogue, for which we can notguarantee delivery.All the slides can be purchased either in complete sets or series or individually. Wereserve the right to make minor alterations to the sets and compilations.New sets for GEOLOGY consisting of rocks and minerals ground thin arelisted on page 46. We will gladly make special offers for any slides or setswhich are not listed in our catalogue.Abbreviations:t.s. transverse or cross section l.s. longitudinal section w.m. whole mount or entire specim
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