Course Restrictions, Priority Lists, and Authorizations | School of Molecular & Cellular Biology

For Fall 2025

Updated 17 April 2025, 5:00 pm

Contact the MCB Instructional Program at ipsupport@mcb.illinois.edu for all registration questions. Use your University Email and provide your full name, UIN, and a screenshot of any error message that you may have received. This page is being updated regularly starting Monday, 24 March 2025. Check here frequently.

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Please note that all changes to restrictions are done manually for every section in a course. It takes time. All times of day listed below are approximate.

Undergraduate majors in the School of MCB who are interested in taking MCB 245 in Fall 2025 for the purpose of pre-health professions: Seats have been set aside for you so keep trying different sections if your preferred section is full. Remember that you can favorite sections to be notified if a seat becomes available. Please direct Qs to IPsupport@mcb.illinois.edu or visit 127 Burrill Hall M-F 8:30 am -5:00 pm.

Students in majors outside of the School of MCB seeking MCB 101 and MCB 245. Now that the Priority Lists are closed, add yourself to any Overflow Lists that may exist for you. There is no guarantee that we will be able to serve you this fall, but we will make every effort to do so. If there is no Overflow List available to you, please email your UIN and three preferred sections to IPsupport@mcb.illinois.edu

MCB 100 does not have any restrictions and will be available according to the University's priority structure.

MCB 101 will be available only through authorization. Students who were on Priority Lists have now been authorized to enroll. Students who are on SMCB's Overflow List for MCB 101 will be added to the course as seats become available. If there are open seats after 23 April, they will be open to all.

MCB 150 will be available through seat reservation only starting on 7 April. Currently all seats are reserved for students in SMCB majors and other majors that require the course. Some seats will be held through the summer to accommodate incoming first-year students in SMCB majors. Seats may become available near the start of the fall term in August. We want to remind students who are interested in taking this course that we offer it in the online format during summers, and we offer it face-to-face every spring and every fall. Students have a very good chance of eventually enrolling in the course, but may not be able to the first time they try. Please feel free to email IPsupport@mcb.illinois.edu if you have questions.

MCB 151 is open with no restrictions.

MCB 170 most seats will be held for incoming first-year students in the SMCB Neuroscience major. Some seats are open for those hoping to transfer into the major, and are already on campus. Any seats that remain unfilled after summer registration (early July) will be open for anyone.

MCB 244 is open with no restrictions.

MCB 245 will only be available through authorization. Most students who were on Priority Lists have now been, or are being, authorized to enroll. Students who are on SMCB's Overflow List for MCB 245 will be added to the course as seats become available. If there are unoccupied seats after 23 April, they will be open to all. We are also working to open some additional lab sections. More details to come next week.

MCB 250 Seats in MCB 250 have been reserved for MCB, Biochemistry, and Neuroscience undergraduate majors. Seats have also been reserved for Neural Engineering undergraduate majors. All restrictions will be removed on 23 April and seats will be available to all. Please contact ipsupport@mcb.illinois.edu if you experience difficulty enrolling. Please include the error message you receive.

MCB 251 Seats in MCB 251 have been reserved for MCB, Biochemistry, and Neuroscience undergraduate majors. All restrictions will be removed on 23 April and seats will be available to all. Please contact ipsupport@mcb.illinois.edu if you experience difficulty enrolling. Please include the error message you receive.

MCB 252 Seats in MCB 250 have been reserved for MCB, Biochemistry, and Neuroscience undergraduate majors. All restrictions will be removed on 23 April and seats will be available to all. Please contact ipsupport@mcb.illinois.edu if you experience difficulty enrolling. Please include the error message you receive.

MCB 253 Seats in MCB 253 have been reserved for MCB, Biochemistry, and Neuroscience undergraduate majors. All restrictions will be removed on 23 April and seats will be available to all. Please contact ipsupport@mcb.illinois.edu if you experience difficulty enrolling. Please include the error message you receive.

MCB 354 Seats in MCB 354 have been reserved for MCB, Biochemistry, and Neuroscience undergraduate majors. All restrictions will be removed on 23 April and seats will be available to all. Please contact ipsupport@mcb.illinois.edu if you experience difficulty enrolling. Please include the error message you receive.

The following Advanced MCB Lab Courses are restricted to undergraduates majoring in MCB, Neuroscience, and Biochemistry. The following restrictions are in place: Seniors (90+ cr. hours) 9 April 8:40 am - 11 April 4:40 pm; Juniors (60-89 cr. hours) 16 April 9:40 am to 18 April 11:40 pm. All restrictions will be lifted on 18 April and remaining seats will become available. Please use the feature in Course Explorer that allows you to "favorite" courses and sections so that you are notified when/if your selections become available.

MCB 301, 364, 428. NOTE: BIOC 455, MCB 460 are not offered in Fall 2025, but both be offered in Spring 2026 along with MCB 301 and MCB 364.

BIOC and BIOP courses follow the MCB courses below.

MCB 314 is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all.

MCB 320 is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all.

MCB 401 is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all.

MCB 408 is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all.

MCB 413 is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all.

MCB 421 is open to 3rd- and 4th-year students with no major restrictions.

MCB 431 is open to 3rd- and 4th-year students with no major restrictions.

MCB 432 is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all at the senior level.

MCB 436 is open to 3rd- and 4th-year students with no major restrictions.

MCB 438 is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all.

MCB 450 is open to 3rd- and 4th-year students with no major restrictions.

MCB 471 is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all.

MCB 474 is open to 3rd- and 4th-year students with no major restrictions.

MCB 461 (NEUR 461) is now open to MCB, BIOC, and Neuroscience majors. On 18 April, all restrictions will be removed and any remaining seats will be open to all.

MCB 493 sxn EPI: Epigenetics is open with no restrictions.

MCB 493 sxn PBC: Physical and Biological Chemistry is restricted to Biochemistry students in their 3rd year and 4th year. It is unlikely that this course will be open to non-Biochemistry majors.

BIOP 401: is restricted to Biochemistry students in their 3rd year and 4th year plus Biophysics graduate students. It is unlikely that this course will be open to non-Biochemistry majors.