© 1994 Nature Publishing Group CORRECTION A 13-amino-acid motif in the cytoplasmic domain of FcyRIIB modulates B-cell receptor signalling Tatsushi Muta, Tomohiro Kurosakl, Zlva Mlsulovin, Mercedes Sanchez, Michel C. Nussenzweig a Jeffrey V. Ravetch Nature368, 70- 73 (1994) IN this letter we neglected to menti on in our citation of ref. 13 that Amigorena et al. 1 had previously expressed in IIA 1.6 cells deletion mutants of mFcyRII-Bl and B2 that did or did not include the 13-amino-acid cytoplasmic domain motif analysed in o ur repor t. The ability of these mutants to attenuate mig- induced B-ce ll activation was correlated with the presence of this region, suggesting its functional involvement in regulating the activati on process. It ha s also been brought to o ur attention that C hoquet et ae used this approach to suggest that the regulatory activity could be localized to the YSLL motif co ntained within the 13-am in o-acid region a nd that the inhibition of mig-induced activation by mFcyRII affects the influx of extracellular Ca 2 +. We apo logize for these oversights. 0 1. Amigore na. S. eta/. Science 256, 1808-1812 (1992). 2. Choquet. D. et at. J. Cell Bioi. 121, 355-363 (1993 ). CORRECTION Laser action in strongly scattering media N. M. Lawandy, R. M. Balachandran, A. S. L. Gomes a E. Sauvaln Nature 368, 436-438 (1994) WE omitted to acknowledge that A.S.L.G. was partially funded by the CNPq Brazilian Agency during this work , undertaken while on sabba tical leave from the Departamento de Fisica, Universidade Federal de Pernambuco , Recife PE 50730, Brazil. 0 ERRATUM Soil acidification and nitrogen saturation from weathering of ammonium-bearing rock Randy A. Dahlgren Nature 368,838 -8 41 (1994) THE elementa l pool sizes shown on they-axis of Fig. 2 (right panel) of this letter should have been given in units ofkgha - 1 , and n ot 'Mg ha - 1 ' as published. D 340 GUIDE TO AUTHORS follow these guidelines so that your may be handled expeditiousl y. Na t/In ' is an international journ al covering a ll the Co ntribut ors should therefore bea r in mind those readers who work in other field s and those for whom English is a second language. and write clearly and simply. avoiding unnece ssary technical terminology. Space in the journal is limited. maktng competition for publication severe. Brevity is highly valued. One printed page of Nature, "'ithout display items. contains about I J OO words. arc selected for publication according to editorial assessment of their suitability and repo rts from independent referees. They can be se nt to London or Washington and should be to the Editor. Manuscript s may be dea lt with in either office, depending on the subject mal!ct. and will where necessary lx sent betwee n offi ces by overnight courier. High priorily cann ot bt:: gi ven ll' prcsubmission enquiries; in urgent ca ses they can be made in the fonn of a one-page fa x. All manuscripts arc acknowl edged on receipt but fewer than half are sent for review. Th ose 1ha t :1 r<: nnt reviewed arc returned as rapidly as possible so that they may be wi th o ut dd a y. Cont ri bu tors may rev iewe rs: li mited requests for the exclusion of specific reviewers <1 rc usua ll y heeded. Manuscripts are usua ll y sent to two or three reviewers. chosen for their than !heir geographical loca ti on. Ma nuscripts accepted for publication a re processed fr om the Lo ndon o ffic e. Nmure rc4ucsts .au thors to dcposil sequence a nd crystall ogra ph ic data in the databases that exi st fo r this purpose. a ma nuscript is accepted for publica t io n. con tributors will receive proofs in abo ut 4 week s. !V'ur un : s statT \\· ill edit manuscripts \Vith a vie w to brevity and clarity, so contributors should check rr o<.1fs car efully. Manuscripts are generally published 2- 3 weeks after receipt of corrected proo fs. 1\'a wr (' does not exad page t:harges. Contribut ors receive a reprint order fonn with their pr oofs; reprint orders arc processed after the manuscript is pub lished and payment received. Categories of paper Review Articles survey recent developments in a field. Most are commissioned but suggestions are in the form of a one-page syn opsis ad dressed to the Reviews Coordinator. Length is negotlable in ad vance Progress review partir ularly ropical developments for a nonspecialist readership. They do not exceed 4 pages in length. Suggestions may be to the Re views Coordinator in the form of ;t brief synopsis. Articles a rc research reports whost: conclu sio ns a re < )f general interest and which are sufficiently rounded to be a !<. Uhstantia l ad vance in undc naa ndmg. They should not ha ve more than 3.000 words or text I not including figure legends) or more six display it ems a nd should not more th < lll fi ve pages of :Va turc. Articles S tart with a heading of 5H )) 0 words written to advertise their content in general tCmlS, to which edito rs wi ll pay particular att ention. The heading docs not usually contain numbers. abbn.:viations or measurements. The introduc ti on to the study is r.xmtained in the first two or three p:tr ug raphs of the article. w·hich also briefly summa ri ze its results and implications. Art icles have fe we r than 50 references and may contain a few sho rt subheadings. Letters to Nature arc short report s of outstandin g novel findings whose Implications arc general and impMtant enough to be of interest to those outside the ll e ld . Letters should have 1.000 or fewer of te x.t and four or fewer display itcrn s. Th e fi rs t paragraph describes. in not more than 150 wo rd s ;tnd without the usc of abbre·viations, the background. rationale and chief t:ondusion s of the udy for tht: particular benefit of non -speciali st Letters do not ha vc subheadings and conta in fewer than 30 rcfert:nces. Commentary dea l \Vith issues in . or arising from. research that arc also of interest to readers ou tside rescart h. News and VIews articles inform nonspecialist readers a bo ut new scientifit: ad vances, sometimes in the fo rm of a confe re nn: report. arc commissioned but proposals can be made in ad vance to the News Views Editor. Scientific Correspondence is for discussion o f to pi ca l scientific matt ers. including those publi shed in N111ure . a nd for mi sce ll aneous co mnbuti ons. Priority is given to le tter s of fewer than 500 words. Preparation of manuscripts All ma nu sc ripts should be typed. doubk:.spaccd. on one side of the paper only. An original a nd four co pi es are required. each at:companicd by artwork. If photographs are included, five sets of originals are required; for line drawings. one se t of o ri ginals and four good-quality photocopies are Reference llsts. figure legends and tables should a ll be on separate sheets. a ll of which should be double -spaced and numbered. Three of relevant manuscripts in press or submitt ed for publication elsewhere should be included with su bmitted clearly rnarked as such. Fi ve co pies of revised and resubmitted manuscript s. labelled with their manuscript number s. are re4uirr d. t ogether with five copies of a letter det<-l iling the changes made. Tit les • •rc brief a nd simple. Active verbs. numeri cal value), abbreviations and punctuation are to be a vo id ed . T itles cont a in o ne or two key words for indexing purposes. Artwori< be mMked individua ll y and dea rl y with the a uthor 's name and . when known , the manuscript number . Ideall y. no fi gure sho uld la rger tha n 28 by 22 em. Fi gu res with several part s ;1re to avoid ed and an; pcrmiw:d o nl y if the parts are closel y related. either e"<perimentally or l ogka ll y. Unlettered originab of ::. ho uld be- provided. Suggestions for cover illustra ti ons. v. ith c. lptions J nd labelled with the ma nusc ript number. are welcome. Original art work is returned when a ca nnot be published Protei n nucleotide sequences should ideally be in the t hree-letter and not the single-lerter code for amino acids. One column width of Nature accommodate 20 amino acids or 60 base pairs. Colour artwork. A charge of £500 per page is made as a co ntribution towards the cost of repr oduc in g colour fi gures. Inability to p;.ty these costs will not prevent publication of essential colour figures if th ,• ein.: umstanccs arc explained. Proofs of colour artwork may be sent to contributors under separa te cover fmrn their galley proofs Figure legends should not exceed 300 words and tdeHll y should be shorter. The figure is desc ribed fir st. then. briefly. the method. Reference to a method published c!se\\'here is preferable to a rull dest: riptio n. Methods arc not described in th e tex t. References arc numbered sequentially as th t:y appear in the text. followed by those in tables and fin all y hy th o) t! in figure legend s. Only pape rs pub li shed or in the press are numbered and in clud ed in the rciCrence li st. All o ther fo rm s of reference should be c it ed in the text as a persona!t:ommuni cati on. manus<. ·ript :. ubmit tcd or in Text is not included in ref erence lists. References are abbrev i- a ted a<.·\:o rdin c. to the Worl d Ust of Scientific Pniodical s (Butterworths. l.ondon . 1963-65 ). The firs! a nd la s1 page - numbers are indudcd : rde;ence- to books includes publi sher. place and date. Abbreviations, sv mbob. uni ts and Greek letters shou ld be identified the first time they are used. shl) uld be a voided whenever possible a nd . if used . ddlned . Footnotes are not used in the tc x. t. Acknowledgements arc brief and appear a rt er the refe rence li st: grant and contribution numbers arc nn t a ll owcr...l. Supplementary information 1s material rclt:va nt to Articles or Letters which cannot. for la..:: k of spat:c. he published in full. but which 1s :wailab!e fro m .Na11m' on request Submission. \1anuscripts can be sent to the Editor at 4 Little Es::.cx. Street. London WC2R 3LF. UK or at 1234 National Press Buildin g. Washington . DC 20045. USA. A telephone and fax number should be included. \1anuscripts or proofs sent by air courier to London should be declared as " manu sc ripts' and ·value ss· to prevent the imposition of import duty and value-added tax. NATURE · VOL 369 · 26 MAY 1994