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Articles 13111 - 13140 of 13312
Full-Text Articles in Entire DC Network
Role Of The Gamete Membranes In Fertilization In Saccoglossus Kowalevskii (Enteropneusta): I. The Acrosomal Region And Its Changes In Early Stages Of Fertilization, Arthur L. Colwin, Laura Hunter Colwin
Role Of The Gamete Membranes In Fertilization In Saccoglossus Kowalevskii (Enteropneusta): I. The Acrosomal Region And Its Changes In Early Stages Of Fertilization, Arthur L. Colwin, Laura Hunter Colwin
Publications and Research
Previous electron microscope studies of sperm-egg association in the annelid Hydroides revealed novel aspects with respect to the acrosomal region. To determine whether these aspects were unique, a comparable study was made of a species belonging to a widely separated phylum, Hemichordata. Osmium tetroxide-fixed polyspermic material of the enteropneust, Saccoglossus, was used. The acrosomal region includes the membrane-bounded acrosome, with its large acrosomal granule and shallow adnuclear invagination, and the periacrosomal material which surrounds the acrosome except at the apex; here, the acrosomal membrane lies very close to the enclosing sperm plasma membrane. After reaching the egg envelope, the spermatozoon …
Role Of The Gamete Membranes In Fertilization In Saccoglossus Kowalevskii (Enteropneusta): Ii. Zygote Formation By Gamete Membrane Fusion, Laura Hunter Colwin, Arthur L. Colwin
Role Of The Gamete Membranes In Fertilization In Saccoglossus Kowalevskii (Enteropneusta): Ii. Zygote Formation By Gamete Membrane Fusion, Laura Hunter Colwin, Arthur L. Colwin
Publications and Research
An earlier paper showed that in Saccoglossus the acrosomal tubule makes contact with the egg plasma membrane. The present paper includes evidence that the sperm and egg plasma membranes fuse to establish the single continuous zygote membrane which, consequently, is a mosaic. Contrary to the general hypothesis of Tyler, pinocytosis or phagocytosis plays no role in zygote formation. Contact between the gametes is actually between two newly exposed surfaces: in the spermatozoon, the surface was formerly the interior of the acrosomal vesicle; in the egg, it was membrane previously covered by the egg envelopes. The concept that all the events …
The Ticker, November 27, 1963
The Ticker
The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.
The Ticker, November 12, 1963
The Ticker
The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.
The Ticker, November 6, 1963
The Ticker
The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.
The Reporter, October 30, 1963
The Reporter, October 30, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Ticker, October 22, 1963
The Ticker
The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.
The Reporter, September 5, 1963
The Reporter, September 5, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Reporter, May 15, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Reporter, May 8, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Communicator, May, 1963, Bronx Community College
The Communicator, May, 1963, Bronx Community College
The Communicator
The Communicator newspaper published in May, 1963.
The Reporter, April 24, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Reporter, March 27, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Ticker, March 5, 1963
The Ticker
The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.
The Reporter, February 27, 1963
The Reporter, February 27, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Reporter, February 20, 1963
The Reporter, February 20, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Ticker, February 13, 1963
The Ticker
The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.
The Reporter, February 4, 1963
The Reporter, February 4, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Reporter, January 9, 1963
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Communicator, December, 1962, Bronx Community College
The Communicator, December, 1962, Bronx Community College
The Communicator
The Communicator newspaper published in December, 1962.
The Communicator, November, 1962, Bronx Community College
The Communicator, November, 1962, Bronx Community College
The Communicator
The Communicator newspaper published in November, 1962.
Effect Of Temperature On The Potential And Current Thresholds Of Axon Membrane, Rita Guttman
Effect Of Temperature On The Potential And Current Thresholds Of Axon Membrane, Rita Guttman
Publications and Research
The effect of temperature on the potential and current thresholds of the squid giant axon membrane was measured with gross external electrodes. A central segment of the axon, 0.8 mm long and in sea water, was isolated by flowing low conductance, isoosmotic sucrose solution on each side; both ends were depolarized in isoosmotic KCl. Measured biphasic square wave currents at five cycles per second were applied between one end of the nerve and the membrane of the central segment. The membrane potential was recorded between the central sea water and the other depolarized end. The recorded potentials are developed only …
The Communicator, May, 1962, Bronx Community College
The Communicator, May, 1962, Bronx Community College
The Communicator
The Communicator newspaper published in May, 1962.
The Ticker, April 10, 1962
The Ticker
The Ticker is the student newspaper of Baruch College. It has been published continuously since 1932, when the Baruch College campus was the School of Business and Civic Administration of the City College of New York.
On Two Methods Of Unbiased Estimation With Auxiliary Variates, William (Bill) H. Williams
On Two Methods Of Unbiased Estimation With Auxiliary Variates, William (Bill) H. Williams
Publications and Research
No abstract provided.
The Communicator, January, 1962, Bronx Community College
The Communicator, January, 1962, Bronx Community College
The Communicator
The Communicator newspaper published in January, 1962.
Genesis 1962, Bronx Community College
Genesis 1962, Bronx Community College
Yearbooks
1962 yearbook from Bronx Community College of the City University of New York.
The Reporter, November 8, 1961
The Reporter, November 8, 1961
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Reporter, October 25, 1961
The Reporter, October 25, 1961
The Reporter
The Reporter was Baruch College's evening session newspaper. Founded in 1923, when Baruch College was still part of City College, the Reporter billed itself as "the Oldest Evening Session College Newspaper Published in the United States." It ceased publication in 2002.
The Communicator, October, 1961, Bronx Community College
The Communicator, October, 1961, Bronx Community College
The Communicator
The Communicator newspaper published in October, 1961.